VXA Variable Optical Attenuators

PM Version Available; 630 to 1550 nm; Fiber Type SM, MM, PM (PANDA); Connector Type FC/UPC, FC/APC, other; Attenuation 0.6 to 50 dB LightComm Technology’s (PM)VOA series of variable optical attenuators is a useful tool for the power adjustment of optical components and systems test. Manual and screwdriver-driven versions are available, also in polarization maintaining (PM) technology. Key Features: High Extinction Ratio (For PMVOA) Wide Attenuation Range High Precision Low Original Loss Compact Size Applications: Fiber Communication System Test; Optical Passive Component Test

Pigtail Style, Optional Removable Filter; Fiber Type SM, PM, MM; 440 to 1625 nm; Connector Type NTT-FC/PC, ST, SC, LC, MU, other; Attenuation 5 to 30 dB OZ Optics’ (R)ND-11 series of expanded beam style neutral density fixed attenuators are ideal for multi mode applications and for applications where attenuating fibers are not available or usable. These pigtail-style attenuators provide mode independent fixed attenuation when used with multi mode fibers. The insertion loss will not depend on how the light is launched into the fiber. This is a significant advantage over other attenuator designs. The attenuators consist of a set of collimating and focusing optics and a central baseplate containing the filter. The expanded beam design permits higher power handling than plug style attenuators. The filters themselves can be either permanent (ND-11 series) or removable (RND-11 series). This provides great flexibility for experimentation. Key Features: Mode Independent Attenuation Level Rugged and Compact Size Pigtail Style Removable Filter Versions (RND-11) Wide Wavelength Range Single Mode, Polarization Maintaining, and Multi Mode Fiber Versions Expanded Beam Technology for Flexible Design Applications: CATV, LAN and Telecommunications; Receiver Padding; Test and Measurement; Optical Power Equalization; Research & Design

Receptacle Style, Optional Removable Filter; Fiber Type MM; 440 to 1625 nm; Connector Type NTT-FC/PC, ST, SC, other; Attenuation 5 to 30 dB OZ Optics’ (R)ND-200 series of expanded beam style neutral density fixed attenuators are ideal for multi mode applications and for applications where attenuating fibers are not available or usable. These receptacle-style attenuators provide mode independent fixed attenuation when used with multi mode fibers. The insertion loss will not depend on how the light is launched into the fiber. This is a significant advantage over other attenuator designs. The attenuators consist of a set of collimating and focusing optics and a central baseplate containing the filter. The expanded beam design permits higher power handling than plug style attenuators. The filters themselves can be either permanent (ND-200 series) or removable (RND-200 series). This provides great flexibility for experimentation. Key Features: Mode Independent Attenuation Level Rugged and Compact Size Receptacle Style Removable Filter Versions (RND-200) Wide Wavelength Range Suitable for Multi Mode Fibers Expanded Beam Technology for Flexible Design Applications: CATV, LAN and Telecommunications; Receiver Padding; Test and Measurement; Optical Power Equalization; Research & Design

Fixed; Fiber Type SMF-28; 1425-1605 nm; Fiber Length 0.5, 1 m; Connector Type FC/PC, FC/APC, SC/APC, FC/UPC, SC/UPC, LC, None; Attenuation 1-20 dB, Other; Dimensions Ø3.0x55/65, Ø5.0x80, 80x10x8 mm Gooch & Housego’s AFF-X series of fixed attenuators are compact fused fiber components that reduce optical power by a specified amount. Gooch & Housego (G&H) utilizes a proprietary manufacturing technology that provides accurate attenuation with low wavelength, temperature and polarization dependence. Designed for use where optical power levels need to be managed, G&H’s AFF-xxx0 xBxxx components have standard attenuation values ranging from 1 to 20 dB. Standard wavelength windows are the C, L, C+L or S bands. Attenuators may also be optimized for custom attenuation levels, tolerances and wavelengths – contact AMS Technologies to discuss your customized attenuator solution. Key Features: Fixed Attenuation: 1 to 20 dB, Other Values on Request High Performance Low Back Reflection – Return Loss (RL): 55 dB Proven Reliability C, L, C+L or S Band, 1425 to 1605 nm Wavelength Dependent Loss (WDL): ≤0.10 to ≤1.20 dB Polarization Dependent Loss (PDL): ≤0.09 to ≤0.80 dB Fiber Type: Corning SMF-28 Pigtail Length: 0.5, 1 m Connector Type: FC/PC, FC/APC, SC/APC, FC/UPC, SC/UPC, LC, None Custom Parts Available Compliance: Telcordia GR-1221 Dimensions: Ø3.0 x 55/65, Ø5.0 x 80, 80 x 10 x 8 mm Applications: Power Management in Optical Networks; Receiver Protection; WDM System Channel Balancing; Test Equipment; Fiber Lasers; Sensors

Blocking, Pigtail Style; Fiber Type SM, MM, PM; 350 to 2050 nm; Connector Type NTT-FC/PC, ST, SC, LC/PC, other; Attenuation up to 80 dB OZ Optics’ BB-100/400/500/700-11 series of compact PC board mountable blocking pigtail style variable attenuators with low backreflection are designed to meet Telcordia standards. These attenuators can be used for 1300 nm and 1550 nm as well as for C, L and S bands, with minimal changes in the insertion loss. Mounting holes provide easy attachment to PC boards and patch panels. The mounting hole patterns and attenuator sizes can be modified to meet customer requirements The attenuators consist of two collimating lenses, prealigned for optimum coupling efficiency. A threaded radial screw is used to block the collimated beam between the two lenses. Because the attenuator works by directly blocking the beam, it is polarization insensitive. A seal cap is used to seal the junction against temperature and humidity effects. The attenuator can even withstand immersion in water for extended periods of time. Variable attenuators are offered with single mode, multi mode, or polarization maintaining fibers. Key Features: Rugged and Compact Size Wide Wavelength Range Single Mode, Multi Mode and Polarization Maintaining Fiber Versions Low PDL and Wavelength Dependency High Power Handling Wide Attenuation Range Low Backreflection Designed to Meet Telcordia Requirements Applications: Optical Power Equalization and Power Control for WDMs and Multi-channel Optically Amplified Networks; Telecommunications; CATV; LAN; Test and Measurement; Receiver Padding; Optical Sensors

Blocking, Receptacle Style; Fiber Type SM, MM, PM; 350 to 2050 nm; Connector Type (Receptacle) NTT-FC/PC, ST, SMA 905, SC; Attenuation 2 dB to 80 dB OZ Optics’ BB-200 series of blocking receptacle style variable attenuators consist of two baseplates with lenses. The two baseplates are aligned for optimum coupling efficiency using a patented alignment technique. A threaded radial screw is used to block the collimated beam between the two lenses. Rotating the screw changes its position within the collimated beam, thus varying the power level coupled into the receiver fiber. Because the attenuator works by directly blocking the beam, it is polarization insensitive. Because of limitations in receptacle tolerances, receptacle style attenuators are not recommended for single mode or polarization maintaining applications requiring low losses and good repeatability. Instead, please refer to the OZ Optics BB-100/400/500/700-11 series of blocking pigtail style variable attenuators. Key Features: Compact, Rugged Housing High Resolution Wide Wavelength Range (350 to 2050 nm) Wide Variety of Connectors Available Polarization Insensitive Applications: CATV, LAN and Telecommunications Use; Receiver Padding; Test and Measurement; Optical Power Equalization

Neutral Density Filter, Pigtail Style; Fiber Type SM, MM, PM; 800 to 1625 nm; Connector Type NTT-FC/PC, ST, SC, LC/PC, other; Attenuation IL to 40 dB OZ Optics’ BB-500-11-ND series of compact PC board mountable, pigtail style variable attenuators are designed to meet Telcordia requirements. These attenuators with low backreflection can be used for 1300 nm and 1550 nm, as well as for C, L and S bands, with minimal changes in the insertion loss. Mounting holes provide easy attachment to PC boards and patch panels. The mounting hole patterns and attenuator sizes can be modified to meet customer requirements.The attenuators consist of two baseplates, each baseplate containing a fiber followed by a collimating lens. The attenuator is prealigned for optimum coupling efficiency using a patented tilt alignment technique. A variable neutral density filter is used to provide more uniform attenuation in multi mode applications than the blocking screw technique. The attenuation is controlled by a turn screw on the side of the attenuator, which controls the position of the filter. Variable attenuators based on the neutral density filter are ideal for multi mode fiber applications where one may be concerned about modal noise. When blocking style attenuators are used with multi mode fiber, some modes are blocked, while others are transmitted. This can produce 1 dB or greater modal noise fluctuations with coherent sources. A variable attenuator using a neutral density filter is not as strongly affected by modal noise. However, neutral density filter attenuators offer lower attenuation range (around 40dB) and can only handle about 50mW of power. While generally used for multi mode applications, OZ Optics can also produce single mode and polarization maintaining versions. Key Features: Neutral Density FilterRugged and Compact Size Wide Wavelength Range Single Mode, Polarization Maintaining and Multi Mode Fiber Versions Low Polarization Dependent Loss (PDL) Low Wavelength Dependence Mode Insensitive Attenuation Low Backreflection Designed to Meet Telcordia Requirements Applications: Optical Power Equalization and Power Control for WDMs and Multi-channel Optically Amplified Networks; Telecommunications; CATV; LAN; Test and Measurement; Receiver Padding; Optical Sensors

Reflective Style, Manually (Screw) Controlled; Fiber Type SM, MM, PM; 400 to 1625 nm; Connector Type NTT-FC/PC, ST, SC, LC/PC, other; Attenuation up to 40, 60 dB OZ Optics’ BB-600-11 series of compact PC board mountable, reflective style, variable attenuators with low backreflection can be used for C, L and S wavelength bands, with minimal changes in insertion loss. Reflector style housings are ideal for applications where the input and output fibers must be attached to the same side of the attenuator. Mounting holes provide easy attachment to PC boards and patch panels. The BB-600-11 series of reflector style attenuators contain either a variable neutral density filter or a blocking plate depending on the attenuator version selected. The blocking style is ideal for high power (over 50 mW) applications, while the neutral density filter provides more uniform attenuation in multi mode applications. The attenuation is controlled by a turn screw on the side of the attenuator, which controls the position of the filter or plate. Key Features: Neutral Density Filter or High-power Versions Available Rugged and Compact Wide Wavelength Range Single Mode and Multi Mode Fiber Versions Low PDL and Wavelength Dependence Mode Independent Attenuation in Multi Mode Applications with Neutral Density Filter Version Wide Attenuation Range Low Backreflection Applications: Optical Power Equalization and Power Control for WDMs and Multi-channel Optically Amplified Networks; Telecommunications; CATV; LAN; Test and Measurement; Receiver Padding

Electronically Controlled; Fiber Type SM, MM, PM (PANDA); 350 to 2050 nm; Connector Type NTT-FC/PC, ST, SC, other; Attenuation IL to 40, 60 dB OZ Optics DD series of compact PC board mountable motor driven variable attenuators with low backreflection offers excellent speed, repeatability, and accuracy. Single mode and polarization maintaining (PM) attenuators utilize a novel blocking style attenuation technique, while multimode attenuators use a variable neutral density filter to minimize mode dependent losses. Both types feature a homing sensor to calibrate the attenuator, removing the need to use external taps, and a jam-proof tuning mechanism.The PC version uses a reliable stepper motor that can be controlled by an external driver. The basic model allows direct access to the stepper motor, as well as a logic level output for HOME position information. The -DR option adds a high-speed driver circuit that accepts four logic level inputs to control the stepper motor. Finally, the -MC option features an embedded microcontroller with a programmed calibration curve. The units are addressable and support RS232, SPI, or I²C communication protocols.AMS Technologies and OZ Optics can also customize the design to fit your needs. There are smaller and faster versions if lower resolution is acceptable. Contact AMS Technologies for detailed specifications. Key Features: Stepper Motor Driven High Power Handling, High Speed and High Resolution Wide Attenuation Range (from 350 to 2050 nm) Wide Wavelength Range Low PDL and Wavelength Dependency Low Insertion Loss and Backreflection Rugged and Compact Design Computer Interface (-MC Version) SM, MM and PM Fiber Versions Available Applications: Active Gain Equalization in DWDM Systems; Local Power Monitoring and Feedback Attenuator Settings; Bit Error Testing; Trouble Shooting Receivers and Other Active Fiber Optic Components; Simulating Long Distance Fiber Transmission; Design of Fiber Optic Transmitter/Receiver Circuitry; Power Meter Linearity Checks; Power Setting and Power Control; OCT Systems

Plug, Receptacle & Loopback Types; 440 to 1625 nm; Attenuation 1 to 25 dB; Return Loss 50, 60 dB; Power Handling 50, 500 mW OZ Optics’ FA-300/400/500 line of low cost fixed attenuators are available in different configurations like hybrid male to female, bulkhead receptacle and loopback to best suit your particular application. Each configuration has its own strengths. The hybrid type is ideal for reducing the intensity of a signal just prior to going into a receiver. They are also available with different connector types on the input and output. The receptacle style is ideal when two male connectors need to be mated with a fixed attenuator. Finally, the loopback style attenuator is intended for patch panel installations. With its own technology to precisely attenuate signals in fibers, OZ Optics can create fixed attenuators within any standard fiber, with low polarization dependent loss (PDL) and high power handling. The resultant attenuating fiber is physically identical in appearance and behaviour to the original fiber, allowing it to be used to build male-female hybrid attenuators. Attenuating fiber can be made from either single mode and polarization maintaining (PM) fiber. PM attenuating fiber maintains polarization to better than 25 dB. Multimode fiber attenuators can also be made this way, provided the light travelling through the fiber is incoherent and uniformly excites the fiber modes. OZ Optics’ single mode plug type attenuators use attenuating fibers that are specially doped to reduce the intensity of the light. The fibers also feature a double cladding, with an absorbing dopant in the inner cladding layer, effectively suppressing light scattering into the cladding. Thus, the readings will not significantly depend on the application. This is a key advantage of the OZ Optics single mode hybrid style fixed attenuator (Note: Multi mode plug style attenuators do show cladding modes). These attenuators have been tested in accordance with Telcordia standards. Hybrid male-female attenuators are available with between 0.5 to 20 dB attenuation, in 0.1 dB increments. Higher attenuation levels and higher resolution attenuation steps are possible. Attenuators can be made for operating wavelengths from 488 nm to 1650 nm. Prototype and custom designs can be made quickly and in small volumes economically.Bulkhead receptacle style fixed attenuators also use attenuated doped fiber and are available in female to female configurations for FC, SC and ST types. Finally, OZ Optics multimode loopback attenuators use a special attenuating filter inside. This provides uniform attenuation, regardless of the source being used. Many other loopback style fixed attenuators on the market use a high loss splice to attenuate the light. In multimode fibers this method is not recommended because the attenuation of the splice will greatly depend on the launch conditions from the source. OZ Optics’ loopback style attenuators avoid this problem. Key Features: Low Backreflection Wide Wavelength Range Polarization Insensitive Compact and Rugged Housings Wide Range of Connectors/Receptacles Hybrid Style Attenuator Uses Attenuating Fiber Mode Independent Multi Mode Loopback Attenuators Designed to Meet Telcordia Requirements Applications: Optical Power Equalization; CATV, LAN and Telecommunications; Test and Measurement; Channel Balancing for WDM Systems; Receiver Padding; Optical Transmission Systems

4-32 Channels; Power Handling ≤2 W; Fiber Type SM, MM, PM; 350-2050 nm; Connector Type NTT-FC/PC, ST, SC, SCA, LC/PC, Other; Attenuation ≤60 dB OZ Optics offers compact and rugged multichannel digital attenuators with high resolution, high attenuation range, and high power handling (blocking technique only). OZ Optics’ MCDD-100 rackmount digital multichannel attenuators are 19” 3U rack modules. These attenuators have low insertion loss, low backreflection, low PDL and flat wavelength response. They can be calibrated for up to four wavelengths for each attenuator, for C or L bands. Alternatively, the unit can be calibrated for a continuous range. By using interpolation between the calibration wavelengths, the unit is capable of providing accurate attenuation levels over a continuous, broad range of wavelengths. OZ Optics’ MCDD-100 multichannel attenuators are ideal for use in bit error rate testing, troubleshooting receivers and other active fiber optic components, power meter linearity checks, simulating long distance fiber transmission, and power setting. A computer interface allows users to access or remotely control the unit through a PC. The built-in power meter and power stabilization function lets you set and maintain the output power stability even when the input power fluctuates. You will get reliable and repeatable test results, each and every time. OZ Optics provides attenuators that use either single mode (SM), multi mode (MM) or polarization maintaining (PM) fiber. In general, OZ Optics uses polarization maintaining fibers based on the PANDA fiber structure when building polarization maintaining components and patch cords. However, OZ Optics can construct devices using other PM fiber structures. OZ Optics carries some alternative fiber types in stock, so please contact AMS Technologies our for availability. If necessary, OZ Optics is willing to use customer supplied fibers to build devices. Key Features: 4 to 32 Channels High Power Handling: Up to 2 W Wide Attenuation Range: Up to 60 dB Low Polarization Dependent Loss (PDL): ≤0.05 dB Typ., ≤0.01 dB Min. Low Wavelength Dependency of Attenuation: ≤0.3 dB (1300 nm to 1550 nm), ≤0.1 dB (1520 nm to 1570 nm) Low Insertion Loss (IL): 1.0 dB, 2.0 dB Typ., 2.0 dB, 4.0 dB Max. Low Back Reflection: Return Loss (IL): 35 dB to 60 dB High Attenuation Resolution: 0.01 dB Rugged and Compact Design Calibrated for Dual Wavelengths (1300 nm to 1550 nm) or Calibrated for C and L Bands. Can Also Be Calibrated for up to Four Individual Wavelengths Wide Wavelength Range: 350 nm to 2050 nm Wide Range of Receptacles Blocking Technique for Single Mode (SM) and Polarization Maintaining (PM), Neutral Density Filter Technique for Multi Mode (MM) Fiber Applications Computer Interface: USB as Standard Your Choice of up to 32 Attenuators per Unit Choose Between Broad and Narrow Wavelength Optional Integrated Power Monitoring for Precise Output Power Control Speed 100 ms Repeatability of Attenuation Setting: ±0.03 dB to ±0.3 dB Accuracy: ±0.03 dB to ±1.0 dB Polarization Extinction Ratio (PER) for PM Fiber: 20 dB, 25 dB, 30 dB Dimensions: 48.26 x 13.33 x 50.8 cm Weight: 15 kg + 0.25 kg/Channel) Applications: Bit Error Rate (BER) Testing; Trouble Shooting Receivers and Other Active Fiber Optic Components; Simulating Long-distance Fiber Transmission; Design of Fiber Optic Transmitter/Receiver Circuitry; Power Meter Linearity Checks; Power Setting

1-4 Channels; Power Handling ≤2 W; Fiber Type SM, MM, PM; 350-2050 nm; Connector Type NTT-FC/PC, ST, SC, SCA, LC/PC, Other; Attenuation ≤60 dB With its MCDD-1000 system, OZ Optics offers compact, rugged and low-cost benchtop digital multichannel attenuators with high resolution, high attenuation range, and high power handling (blocking technique only). These attenuators have low insertion loss (IL), low backreflection, low polarization dependent loss (PDL) and flat wavelength response. These units can be calibrated for up to 4 wavelengths for each attenuator, for C or L bands. Alternatively, the unit can be calibrated for a continuous range. By using interpolation between the calibration wavelengths, the MCDD-1000 benchtop digital multichannel attenuators units are capable of providing accurate attenuation levels over a continuous, broad range of wavelengths. OZ Optics’ multichannel attenuators are ideal for use in bit error rate testing, troubleshooting receivers and other active fiber optic components, power meter linearity checks, simulating long distance fiber transmission, and power setting. A computer interface allows users to access or remotely control the unit through a PC. OZ Optics provides attenuators that use either single mode (SM), multi mode (MM) or polarization maintaining (PM) fiber. In general, OZ Optics uses polarization maintaining fibers based on the PANDA fiber structure when building polarization maintaining components and patch cords. However, OZ Optics can construct devices using other PM fiber structures. OZ Optics does carry some alternative fiber types in stock, so please contact AMS Technologies for availability. If necessary, OZ Optics is willing to use customer-supplied fibers to build devices. Key Features: High Power Handling: Up to 2 W Wide Attenuation Range: Up to 60 dB Low Polarization Dependent Loss (PDL): ≤0.05 dB Typ., ≤0.01 dB Min. Low Wavelength Dependency Low Insertion Loss (IL): 1.0 dB, 2.0 dB Typ., 2.0 dB, 4.0 dB Max. Low Backreflection Return Loss: 35 dB to 60 dB High Attenuation Resolution: 0.01 dB Wavelength Dependence of Attenuation: ≤0.3 dB (1300-1550 nm, ≤0.1 dB (1520-1570 nm) Speed: 100 ms Max. Optical Power: 50 mW, 2 W Rugged and Compact Design Can be Calibrated for Dual Wavelengths (1300 nm to 550 nm) or Calibrated for Telecom C and L Band Applications. Can Also be Calibrated for up to Four Individual Wavelengths per Channel Wide Wavelength Range: 350 nm to 2050 nm Wide Range of Receptacles Blocking Technique for Single Mode (SM) and Polarization Maintaining, Neutral Density Filter Technique for Multi Mode (MM) Fiber Applications Computer Interface: USB (as Standard) Your Choice of up to Four Attenuators per Unit Optional Integrated Power Monitoring for Precise Output Power Control Applications: Bit Error Rate (BER) Testing; Troubleshooting Receivers and Other Active Fiber Optic Components; Simulating Long-distance Fiber Transmission; Design of Fiber Optic Transmitter/Receiver Circuitry; Power Meter Linearity Checks; Power Setting