Adiabatic reflection Y-coupler apparatus

Details Adiabatic reflection Y-coupler apparatus Adiabatic reflection Y-coupler apparatus

1995-05-30

1997-05-20

Healy, Brian

Optical waveguides

With optical coupler

Particular coupling function

385 37, 385 45, 385130, 359127, G02B 626

Patent

active

RE0355160

ABSTRACT:
A wavelength selective structure is coupled to an adiabatic Y-coupler via a multimode section which supports both symmetric and antisymmetric modes. One single mode branch of the coupler converts guided light to a symmetric mode, whereas the other single mode branch converts guided light to an anti-symmetric mode. The structure, which includes a pair of single mode waveguide arms coupled to the common section and a reflection device (such as a grating or ROR) located in each arm, converts reflected light from a symmetric mode to an anti-symmetric mode and conversely. Applications described include a channel dropping fiber and channel balancing apparatus for WDM systems, and a dispersion compensator for fiber optic systems.

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