Software for maintaining stable output states of polarization

Polarization Stabilizer

The POS-203 Polarization Stabilizer maintains a stable output state of polarization (SOP) against any fluctuations in the feedback signal. The instrument uses an algorithm to either minimize or maximize the supplied feedback signal by dynamically altering the SOP.

Product Description

The POS-203 architecture includes a fiber squeezer polarization controller and proprietary algorithms. It is able compensate for an input polarization discontinuity in as fast as 5 ms, or track without resets against a continuous input SOP rotation of up to 32π/s.

The POS-203 is a versatile instrument that automatically optimizes the output SOP to either maximize or minimize an optical or electrical feedback signal. It also allows the user to optimize the control cycle for particular applications by adjusting the step size, feedback delay, activation threshold, and search algorithm (maximum or minimum).

  • Key Features
    • Reset-free operation
    • Maximum or minimum search, tunable control parameters
    • Fast recovery time and tracking speed
  • Specifications
    Wavelength range 1550, 1310, or 1060±50nm
    SOP recovery time <5ms (1.5 ms typical)
    SOP rotation tracking speed 32π/s
    SOP accuracy <0.1 dB (PM output fiber, after polarizer)
    Isolation in orthogonal polarization 20 dB
    Insertion loss (IL)

    <0.5 dB (POS-203 controller path)

    For full specifications, please download the data sheet.

  • Documentation

Solutions and Applications

Fiber optics

The POS-203 can be used to find and maintain any target polarization state as long as an optical or electrical feedback signal can be generated such that the target polarization state corresponds to the maximum or minimum value of the feedback signal.


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