Phase Shifter
FPS-001

Phase Shifter

The FPS-001 is an all fiber device that shifts or modulates phase by up to 15π at frequencies from DC to 20 kHz.

FPS-001 Data Sheet
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Product Description

The FPS-001 is a small, piezo-driven phase shifter that works by stretching a length of fiber. It can provide several π phase shift at frequencies up to 20 kHz. Because the optical path is all in fiber, the device has minimal insertion and return loss. The FPS-001 uses a straight fiber rather than fiber wound on a frame, so the optical path length in fiber is exactly the length of the device from connector tip to connector tip, and can be minimized by controlling the length of the pigtails or by using a NoTail version.

  • Key Features
    • Low IL, PDL, and residual amplitude modulation
    • Frequencies up to 20 kHz
    • NoTail model available (minimal OPL)
    • Compact
  • Specifications
    Frequency range 0-20 kHz
    Total phase shift range (0-20 kHz) >8π
    Half-wave voltage (0-20 kHz) <20 V
    Operating wavelengths

    1260-1650 or 980-1310nm standard

    (fiber dependent)
    IL <0.1 dB, excluding connectors
    PDL <0.05 dB (SMF-28 fiber, excluding connectors)
    Residual amplitude modulation ±0.01 dB
    RL >65 dB, excluding connectors

    For full specifications, please download the data sheet.

  • Documentation

Solutions and Applications

The FPS-001 is useful for small-range phase shifts at frequencies up to 20 kHz. It can be used for fine adjustment or to add a dither in interferometric applications.

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