POS-002 Polarization Tracker

Product number: SW11291

Manufacturer: General Photonics

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Product information "POS-002 Polarization Tracker"

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

Manufacturer "General Photonics"

Headquartered in Chino, CA, USA, General Photonics develops and builds innovative optical instruments and modules to fuel the growth of optical networks, sensor systems and biomedical diagnosis systems. With more than 52 issued US patents and numerous pending applications, General Photonics offers the most complete line of instruments, modules and components for dynamic polarization management and measurement as well as optical delay and timing control in the industry. General Photonics‘ broad range of instruments comprises polarization controllers, stabilizers, synthesizers, analyzers and scramblers as well PMD or PDL emulators and sources. For polarization measurement, General Photonics offers polarization crosstalk analyzers, polarimeters, optical component analyzers and OCDR systems. Tunable lasers and SLED light sources as well as composite material scanners complete the company’s instrument portfolio. On the modules side, General Photonics provides devices for controlling, scrambling and tracking of polarization as well as polarimeters, polarization state generators, depolarizers, Mach-Zehnder interferometers or balanced photodetectors. For optical delay purposes, General Photonics’ module range includes optical delay lines, phase shifters and fiber stretchers.

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