Fiber Optical Dual Phase Modulator Y-Branch 1550nm

SKU: DPMY

The DPMY is a three-port polarization-maintaining (PM) fiber device specifically designed for fiber-loop-based sensing applications, such as fiber-optic gyroscopes and optical current sensors. It integrates a polarizer, a Y-junction coupler, and dual electro-optic phase modulators into a compact structure. Built on Lithium Niobate (LiNbO₃) waveguide technology, the DPMY delivers a high polarization extinction ratio (PER) exceeding 60 dB. This significantly reduces bias drift caused by polarization crosstalk-induced non-reciprocity, ensuring stable and accurate performance. The device is engineered for high reliability and consistent operation across a wide temperature range.
A phase modulator does not require bias control. Using a phase modulator together with a polarizer to construct an intensity modulator may result in unstable operation due to birefringence.
Note: This component is intended for OEM system integration and is not designed for standalone laboratory use. Units supplied without a protective benchtop enclosure are provided without warranty, as they are susceptible to damage from improper handling, installation, or operation.