ILF Faraday Rotators

1310, 1550 nm; IL 1.0 dB; DOP <5%; ER <0.5 dB; RL 55 dB General Photonics’ DEP depolarizer module is a passive device (requiring no external power) that depolarizes laser output. The standard configuration can be used for coherence lengths less than 10 m. Custom units can be specified for coherence lengths of multiple kilometers. The DEP polarizer is ideal for minimizing the polarization sensitivity of fiber optic sensor systems such as systems for quasi-distributed temperature and strain sensing based on fiber Bragg gratings (FBG), systems for distributed temperature and strain sensing based on Brillouin or Raman scattering and systems for distributed acoustic sensing based on Rayleigh scattering. It can also help to eliminate the effects of PDL or polarization sensitivity of optical components and instruments. Equally important, it can be used for depolarizing pump lasers to eliminate the polarization sensitivity of Raman amplifiers. The DEP polarizer is packaged in a small (85 × 60 × 10 mm), rugged aluminium box, providing high performance and superb environmental stability. The internal structure and package size may be different depending on the coherence length or spectral width of the light signal to be depolarized. Contact AMS Technologies for an optimized configuration for your intended applications. Key Features: Customizable for Light Sources With Different Coherence Lengths Low Output Degree of Polarization (DOP): <5% Center Operating Wavelength: 1310, 1550 nm Wide Operating Wavelength Range: ±50 nm Low Insertion Loss: 1.0 dB Typical, 1.4 dB Maximum Compact Size: 85 × 60 × 10, 85 x 85 x 15 mm, Larger Package for Coherence Length >200 m No Power Source Required Coherence Length of Light Source: 10 m Standard, Others Specify Residual Extinction Ratio (ER): <0.5 dB Return Loss: 55 dB Optical Power Handling: ≥300 mW Fiber Type Input: PM Panda Fiber Fiber Type Output: SMF-28 Applications: Minimize Polarization Sensitivity of Fiber Sensors; Depolarize Pump Lasers; Remove Polarization Sensitivity of Raman Amplifiers; Eliminate Polarization Sensitivity of Optical Instruments; Eliminate the Effects of PDL; Can Be Integrated Into Remote Monitors

Pigtail Type; 1064, 1550, 2000 nm; 2,3,4 Stages; Fiber Type SM, PM; Max. Insertion Loss 1.1, 1.2 dB, Max. PDL <0.15, <0.20 dB; Min RL 50 dB; Max. PMD 0.5 ps; Optical Power Handling 500 mW OZ Optics' EOPC high-speed electro-optic polarization controller is based on a novel, low-loss, high-speed, free-space electro-optic crystal technology. It provides a simple, efficient means to quickly manipulate the state of polarization by applying an external voltage. High-speed polarization state management is enabled using two to four crystals in a row with remarkably low loss, all housed in a compact and robust butterfly package. The device can be offered with 2, 3 or 4 crystals (depending on the customer’s requirement), and by applying external voltages one can change/manipulate/control the output polarization state. For endless polarization control, a device with 4 crystal elements is required, while a 3-elements device will be sufficient for polarization scrambling mode operation. The compact, motionless, and vibration-free design allows fast linear response with less than 10 μs response time to the control signal. The controller's rapid response speed easily handles changes in polarization, caused by the external environment, and is highly suitable for polarization controlling and scrambling to either average PDL and PDG effects, or for making PMD, PDL or DOP measurements. This makes the EOPC device ideal for precise test and measurement applications. Key Features: Rapid Response Time: < 10 µs Linear Response Solid State Crystals Low Loss Insertion Loss (IL): <1.2 dB (4 Stages), <1.1 dB (3 Stages), <1.0 dB (2 Stages) Polarization Dependent Loss (PDL): <0.20 dB (4 Stages), <0.20 dB (3 Stages), <0.15 dB (2 Stages) Polarization Mode Dispersion (PMD): <0.5 ps Activation Loss: <0.05 dB Per Channel Return Loss (RL): >50 dB Flexible Configuration Compact Size: 70 mm x 41 mm x 9.5 mm Wide Operating Wavelength Range: 1064 nm, 1550 nm, 2000 nm Long Operating Lifetime Optical Power Handling: 500 mW Electrical Response Time (Rise/Fall Time): <10 μs Vπ (@Room Temperature): Vπ <40 V for 1064 nm, Vπ <60 V for 1550 nm Modulation Rate (Sinusoid): DC to 130 kHz Fiber Type: Single Mode (SM), Polarization Maintaining (PM) Operating Temperature: 0°C to +80°C Applications: Polarization Scrambling; Polarization Stabilization and Management; Polarization Mode Dispersion (PMD) Mitigation; Polarization Dependent Loss (PDL) Mitigation; Polarization Dependent Gain (PDG) Mitigation; PDL, DOP, and PMD Measurement Systems; Interferometers and Sensors; Fiber Lasers; Polarization Demultiplexing; Test Instrumentation; OCT Systems

3 Stage Scramblers or 4 Stage Controllers Available; 1250 to 1650 nm (Others on Request); Insertion Loss <0.4 dB; Polarization Dependent Loss <0.06 dB; Fiber Type SM OZ Optics' EPC series of electrically driven polarization controllers provides a simple, efficient means to manipulate the state of polarization within a single mode (SM) fiber. Employing a novel mechanical fiber squeezing technique, the device is controlled by either three or four (depending on the model) input voltages that the user can vary over a ±5 V range to provide endless polarization control in a robust, easy to operate package. The EPC controllers’ rapid response speed easily handles changes in polarization caused by the external environment and is highly suitable for polarization scrambling for either averaging PDL effects or for making PMD or PDL measurements. Because the fiber within the device is continuous, all insertion losses, return losses, and PDL effects are limited only by the fiber itself. This makes it ideal for precise test and measurement applications. EPC polarization controllers are available in either a three or four channel configuration. The EPC-300 three-channel system is ideal for polarization scrambling applications such as for polarization averaging or PDL measurements. The added redundancy of the EPC-400 four-channel version opens the way to continuous polarization control, without having to occasionally reset the device when a controller reaches its limit. The unique design of the OZ Optics EPC series of polarization controllers means that they do not require any dedicated driver circuitry. There are no internal voltage multipliers or high voltage signals to worry about. Thus operation is safe and simple. Key Features: Negligible Insertion Losses Negligible Return Losses Negligible Polarization Dependent Losses (PDL) >100 Hz Response Speed Continuous Polarization Control Capability Low Voltage Applications: Polarization Scrambling; Polarization Stabilization; Polarization Mode Dispersion (PMD) Mitigation; Polarization Dependent Loss (PDL) Mitigation; PDL and PMD Measurement Systems; Interferometers and Sensors; OCT Systems

3 or 4 Control Channels; 1250-1650 nm, Other; Insertion Loss 0.05 dB; Polarization Dependent Loss <0.06 dB; Fiber Type SM, OtherOZ Optics' EPC-3000 high-speed electrically driven polarization controller provides a simple, efficient means to quickly manipulate the state of polarization within a single mode (SM) fiber. Employing a novel fiber squeezing technique, the device is controlled by either three or four (depending on the model) input voltages to provide endless polarization control and scrambling in a robust, easy to operate package. The EPC-3000 controller's rapid response speed easily handles changes in polarization caused by the external environment and is highly suitable for polarization controlling and scrambling for either averaging PDL, PDG effects, or for making PMD, PDL or DOP measurements. Because the fiber within the device is continuous, all insertion losses, return losses, and PDL effects are limited only by the fiber itself. This makes the EPC-3000 ideal for precise test and measurement applications. The polarization controller is available in either a three or four channel configuration. The three-channel system is ideal for polarization scrambling applications such as for polarization averaging, PDL or PDG measurements. The added redundancy of the four-channel version opens the way to continuous polarization control, without having to occasionally reset the device when a controller reaches its limit. The innovative design of the OZ Optics EPC-3000 high-speed polarization controller provides an integrated module that allows users easily to implement the polarization controller in their systems with both analog and digital inputs. Key Features: Negligible Insertion Loss: 0.05 dB (Excluding Connectors) Negligible Return Loss Negligible Polarization Dependent Loss (PDL) Continuous Polarization Control Capability Compact and PCB Compatible Up to 2 kHz Response Speed and 30 kHz at Resonance Frequency Number of Control Channels: 3, 4 Voltage Range: 0 V to 140 V Typ. Input Capacitance (Each Channel): 0.2 μF -3dB Bandwidth: >30 kHz Electrical Interface: 8-Pin Board Connector Wavelength Range: 1260 nm to 1650 nm Standard, Other Wavelengths Available on Request - Min. Retardation Range: 2π Back Reflection: >60 dB (Excluding connectors) Activation Loss: ±0.05 dB Polarization Dependent Loss (PDL) <0.06 dB Operating Temperature: -10°C to +50°C Fiber Type: Standard 9/125 μm Single Mode Fiber, Other Fiber Types Available on Request Dimensions: 83 mm x 19 mm x 16.5 mm Applications: Polarization Scrambling; Polarization Stabilization; Polarization Mode Dispersion (PMD) Mitigation; Polarization Dependent Loss (PDL) Mitigation; Polarization Dependent Gain (PDG) Mitigation; PDL, DOP, and PMD Measurement Systems; Interferometers and Sensors; Fiber Lasers; Polarization Demultiplexing; Test Instrumentation

Pigtail Style; 1310 or 1550 nm; Rotation Angle 90°; Insertion Loss ≤0.6 dB; Fiber Type SMF-28e Faraday mirror is a passive device that enables the polarization of the input light rotate 90 degree. It is built by the proven thin-film filter technology and the collimator technology. It has excellent performances such as low insertion loss and high environmental stability. Key Features: Compact size Low insertion loss Applications: EDFA, DWDM System, Fiber Sensors, CATV System

Center Wavelength 400 to 2050 nm; Insertion Loss Typ. 0.5 to 1.0 dB; Return Loss ≥40 to ≥70 dB; Polarization Extinction Ratio 20, 30; Fiber Type SM, MM, PM OZ Optics’ FOP series of fiber optic polarizers are designed to polarize the output from a light source or fiber and launch it into an output fiber. These polarizers typically consist of input and output collimators with a plate polarizer in between. Broadband polarizers are used, so the power extinction ratio is maintained for up to several hundreds of nanometers. The same polarizer, for example, may be used for 1300 nm to 1600 nm. The power extinction ratio is the ratio between maximum and minimum output power as the input polarization state is changed. This is different from the output polarization extinction ratio, which is a measure of the ratio between the power in the two axes of polarization maintaining fiber – this value is only applicable when the output fiber is polarization maintaining (PM) fiber. The power extinction ratio will always equal or exceed the polarization extinction ratio. OZ Optics offers fiber optic polarizers in four sizes. The original 12.5 mm diameter size is best suited for non-telecom wavelengths and for custom designs. The larger size is also well suited for high power applications. Polarizers capable of transmitting several Watts of power have been made with this technique. The 5.5 mm diameter size is well suited for telecom wavelengths, such as 1310 and/or 1550 nm, while the 4 mm diameter option is best suited for low-cost systems where lower output extinction ratios are acceptable. Finally, OZ Optics offers a version that is only 3 mm in diameter, featuring exceptionally low return losses and superior performance over a very broad temperature range. Key Features: Rugged and Compact Housing Single Mode (SM), Multi Mode (MM), Polarization Maintaining (PM) and Fiber Combinations Available Miniature Sizes Available Wide Range of Available Wavelengths: 400 to 2050 nm High Extinction Ratio up to 40 dB Low Loss Low Back Reflection Applications: Fiber Amplifiers; System Polarization Extinction Ratio Conditioning; Measuring Polarization Extinction Ratio; Sensors; Integrated Optics; Interferometric Sensors; OCT Systems

Center Wavelength 633-1550 nm; Typ. Insertion Loss 0.5-0.8 dB; Return Loss 40, 60 dB; Polarization Extinction Ratio 20-30 dB; Fiber Type SM, MM, PM; Rotation Angle @Center Wavelength 45° OZ Optics’ FOR/FOFM pigtail-style Faraday rotators change the polarization state of light traveling through them. The output polarization state is rotated by 45 degrees with respect to the input polarization. When combined with a mirror, the reflected light is rotated by another 45 degrees, resulting in a 90 degree rotation. In addition, the polarization handedness is reversed by the mirror. This results in a reflected polarization that is orthogonal to the original polarization. This is useful when used in interferometers, because polarization changes through the fiber are cancelled out on the return journey. Different Faraday rotator materials are applicable to different wavelengths. At 1300 nm to 1600 nm, small powerful rotators allow for very compact packages. From 633 nm to 1064 nm, less powerful rotators materials requiring much longer lengths and larger magnets are used. This accounts for the wide range of package sizes for different wavelength regions. Rotation accuracy is very tightly controlled at 1300 nm to 1625 nm (standard ±3 degrees single pass — with ±1 degree available) but less controllable at lower wavelengths (±3 degrees standard). Faraday rotator mirrors are readily available at telecom wavelengths (1300 nm to 1550 nm). For shorter wavelength applications where an Faraday mirror is required, it can be constructed using a Faraday rotator with a polarization maintaining fiber output pigtail and a polarization maintaining fiber pigtailed fixed reflector. Key Features: Single Mode (SM), Multi Mode (MM), and Polarization Maintaining (PM) Versions Available Wide Range of Center Wavelengths: 633 nm to 1550 nm Low Insertion Loss: 0.5 dB to 0.8 dB Typ., 0.75 dB to 1.0 dB Max. Low Back Reflection Return Loss: 40 dB, 60 dB Polarization Extinction Ratio: 20 dB to 30 dB Rotation Angle at Center Wavelength: 45° Rotation Tolerance at Center Wavelength, +25°C: ±3°, ±1° Compact Housing Applications: Fiber Lasers; Interferometers Sensors; Amplifiers; Circulators; OCT Systems