EPC Electrically Driven Fiber Polarization Controllers/Scramblers

1060, 1310, 1550 nm; IL <1.2, <0.1 dB; SOP Recovery Time 0.9 ms; Tracking Speed 47 π/s; SOP Accuracy <0.1 dB; RL >50 dB General Photonics’ POS-002 polarization tracker automatically adjusts the state of polarization (SOP) towards a reference SOP, counteracting continuous input SOP variations as fast as 0.9 ms with no resets. The reference SOP is determined by a feedback signal which can be provided either internally or externally. The internal feedback version (POS-002-I) consists of a fiber squeezer polarization controller, in-line polarization monitor, digital and analog circuits, and proprietary algorithm. The error signal from the polarization monitor is fed back to the polarization controller to maintain a linear SOP at the output. The output fiber for POS-002-I is typically polarization maintaining (PM) fiber with the SOP aligned to its slow axis. The external feedback version (POS-002-E) replaces the internal polarization monitor with an external analog electrical feedback signal of the user’s choice, such as a voltage proportional to the degree of polarization (DOP) measured by a polarimeter, the bit-error rate (BER) from a BER chip, the RF spectrum of a detected signal, or the optical power after a polarizer. The output fiber is typically single mode (SM) fiber. Key Features: Reset-free Operation State of Polarization (SOP) Recovery Time: <3 ms, 0.9 ms Typical SOP Rotation Tracking Speed: 47 π/s "Plug and Play" Integration Operating Wavelength Range: 1060 ±50 nm, 1310 ±50 nm, or 1550 ±50 nm SOP Accuracy: <0.1 dB Repeatability: <0.1 dB Insertion Loss (IL, Internal Feedback): <1.2 dB, 0.8 dB Typical Insertion Loss (IL, External Feedback): <0.1 dBReturn Loss (RL): >50 dB Isolation in Orthogonal Polarization: 20 dB Optical Power Handling: <20 dBm Communications Interface: RS-232 Dimensions: 19.1 x 98 x 184 mm Applications: PMD Compensation; Polarization Division Demultiplexing; Elimination of Polarization Fading in Coherent Detection and Fiber Sensor Systems; Suppression of Noise Figure in Optical Amplifiers; Reduction of PDL Effects

980-1620 nm; SOP Change Rate >360 krad/s; IL <0.6 dB; PDL <0.1 dB; PMD <0.2 ps; AL <0.1 dB; RL >50 dB General Photonics’ MPC-202 advanced multifunction polarization controller is specially designed to meet the requirements of coherent receiver performance tests. MPC-202 combines General Photonics’ award winning PolaRite™ II/III polarization controller with proprietary polarization control algorithms to achieve a wide range of polarization control functionalities, including high-speed quasi-uniform rate polarization scrambling, random-rate polarization scrambling with Rayleigh rate distribution, discrete-state polarization scrambling with high slew rate, sine, square, and triangle-wave SOP (state of polarization) modulation, and manual polarization control functions. In particular, the “Tornado” quasi-uniform rate polarization scrambling function can achieve a high SOP scrambling rate of up to 60,000 revolutions/s (more than 360 krad/s) with a narrow rate distribution clustered around the highest rate. In short, the MPC-202 is an ideal tool for production or laboratory testing of polarization related functions and parameters, including passive/active component characterization, performance tests of fiber optic interferometers, sensor systems, RF photonics systems, etc. The quasi-uniform rate high-speed scrambling function is particularly useful for SOP tracking speed testing of coherent receivers, and the square wave SOP modulation function is ideal for SOP recovery time tests. Key Features: Quasi-uniform Rate SOP (State of Polarization) Scrambling SOP Change Rate: >360 krad/s Scrambling With Rayleigh Rate Distribution Discrete SOP Scrambling SOP Modulation Operating Wavelength Range: 1260 to 1620 nm, 980 to 1310 nm Tornado Polarization Scrambling: 0.00 to 60,000 Revolutions/s Mean Rayleigh Rate Distribution Polarization Scrambling: 0.00 to 2,000 rad/s Triangle Polarization Scrambling: 0.00 to 2,000 x 2π rad/s Discrete Random States Polarization Scrambling: 0.00 to 20,000 points/s Manual Polarization Control: 4 Channels, 0 to 4π Each Channel Low Insertion Loss (IL): <0.6 dB With Connectors Low Polarization Dependent Loss (PDL): <0.1 dB With Connectors Low Polarization Mode Dispersion (PMD): <0.2 ps With Connectors Low Activation Loss (AL): <0.1 dB With Connectors Return Loss: >50 dB With Connectors Optical Power Handling: 1,000 mW Bright OLED Display Applications: Laboratory Testing of Polarization-related Parameters; Performance Tests of Fiber Optic Interferometers and Systems; SOP Tracking Speed Testing of Coherent Receivers

 Fiber Coupled, Ultra-stable; 375 to 2000 nm; Wavelength Stability (typ) ±0.2 nm; Output Power 0.5 to 300 mW; Power Stability <0.1% to <2%; Polarization Extinction Ratio >18 to >23 dB; Fiber Type SM, MM or PM The OZ-1000, OZ-2000 and OZ-3000 fiber pigtailed ultra-stable laser module series are temperature stabilized, fiber coupled, laser delivery systems. The compact housing contains both the laser and the temperature control. Powered by a single 5 V DC supply, the low noise laser diode and TEC drivers maintain the wavelength variation to better than 0.2 nm, and also reduce the tendency of the laser diode to mode hop, assuming there is no feedback into the laser cavity. The electrical interface on the OZ-1000 is located on the front face of the unit alongside the optical interface, while on the OZ-2000 and OZ-3000 it is on the rear of the unit. The three configurations have as default analog CW output power control, with analog modulation capability. A TTL input interface is optional. Our low profile OZ-3000 comes with a USB interface and an 8 pin circular connector. Standard modules can be analog modulated up to 20 kHz. Special versions are available to cover even higher modulation frequencies, up to 1 MHz for the TTL option – contact us with your requirements. An interlock feature enables the user to shut the unit down and can also be used as a TTL on/off control. In addition a mechanical shutter option is available to provide extra flexibility for controlling laser output power. The unit can be configured with our supplier’s patented inline optical tap for forward power monitor feedback, to further improve short term and long term power stability. Both the pigtail and receptacle style sources offer the choice of polarization maintaining, singlemode, or multimode fiber outputs and a wide range of connector or receptacle types. An output fiber collimator or focuser can be added to the output fiber as an option. Key Features: Wavelengths from 375 nm to 2050 nm Electrically or Optically Variable Output Power up to 300 mW Guaranteed Lifetime: 18 months or 5000 hours - extended warranty also available Excellent Power & Wavelength Stability Analog interface (USB & other Interfaces optional SM, MM or PM Fiber Version Available with Fiber Pigtail or Connector Receptacle Applications: Confocal Microscopy; Flow Cytometry; DNA Sequencing; Medical Imaging, including OCT; Insertion Loss Measurement and Attenuation Measurement; High-Power or Remote Fiber Delivery Systems; Accurate Fiber Optic Testing; Optical Component Manufacturing and Testing; Materials Evaluation and Testing; RGB Illumination Systems