Optical waveguide element with controlled birefringence

Details Optical waveguide element with controlled birefringence Optical waveguide element with controlled birefringence

2008-05-20

2008-05-20

Font, Frank G. (Department: 2883)

Optical waveguides

With optical coupler

Particular coupling structure

C385S001000, C385S002000, C385S003000, C385S039000

Reexamination Certificate

active

07376310

ABSTRACT:
An optical waveguide element having a cladding layer formed on a substrate and at least one waveguide core formed in the cladding layer for transmitting an optical signal. Two heater sections are provided for shifting a phase of optical signals. The two heater sections show different design. This helps controlling heater induced birefringence.

REFERENCES:
patent: 4781424 (1988-11-01), Kawachi
patent: 4900112 (1990-02-01), Kawachi et al.
patent: 5117470 (1992-05-01), Inoue et al.
patent: 6240221 (2001-05-01), Thompson
patent: 2002/0126933 (2002-09-01), Goh et al.

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