Polarization independent optical directional coupler wavelength

Details Polarization independent optical directional coupler wavelength Polarization independent optical directional coupler wavelength

1994-08-18

1996-03-26

Lee, John D.

Optical waveguides

With optical coupler

Particular coupling structure

385 24, 385 41, 385 46, G02B 626

Patent

active

055027830

ABSTRACT:
A polarization independent tunable filter/receiver for optical communications. The tunable filter, operating as a directional coupler, has three waveguides including a central, feedguide and a pair of branch waveguides. Through either electro-optic effects or free carrier injection, the TM and TE polarization modes of the central wavelength can be coupled from the feedguide to the appropriate branch guide. The separated modes can be either detected independently or reunited in phase for further processing.

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