Struktur zum Polarisationsunabhängigen Grob-Wellenlängenmultiplexen

Details

Veröffentlichungs-Nr.

EP4730023

Anmeldetag

3. April 2025

Veröffentlichung

22. April 2026

Rechtsraum

EP

IPC

G02F1/01, G02B6/12

Abstract

Disclosed are embodiments of a structure for polarization-independent coarse wavelength division demultiplexing. The structure includes a polarization splitter-rotator (PSR), which receives a dual polarization mode multi-wavelength optical signal and outputs a single polarization mode multi-wavelength optical signal. The structure includes a wavelength division demultiplexer (WDD) and a thermo-optic phase-shifter (TOPS), which is coupled to the PSR and either coupled to the input section of the WDD or integrated into the input section of the WDD. The structure includes at least one photodetector and a thermal control system (TCS). The photodetector is coupled to an unused end of a waveguide in either the TOPS or WDD (depending on the embodiment). The TCS monitors output current from the photodetector, and based thereon, sets heating voltage(s) applied to heating element(s) in the TOPS, ensuring that single wavelength optical signals output from output sections of the WDD are at desired wavelengths and power levels.

Anmelder

Firma

GlobalFoundries U.S. Inc.

Land

🇺🇸 USA