Optical filter using electro-optic material

Details Optical filter using electro-optic material Optical filter using electro-optic material

1994-12-30

1996-06-11

Ullah, Akm E.

Optical waveguides

With optical coupler

Plural

385 40, G02B 628

Patent

active

055264395

ABSTRACT:
An optical filter in fabricated in an electro-optic material such as lithium niobate and uses a plurality of pairs of waveguides coupled to each other by optical coupling regions. The waveguides and optical coupling regions overlying electrodes which are used to tune the filter by varying the optical path length difference between waveguides and the optical cross coupling in the optical coupling regions.

REFERENCES:
patent: 3936144 (1976-02-01), Caton
patent: 4252402 (1981-02-01), Puech et al.
patent: 4679893 (1986-04-01), Ramer
patent: 4768850 (1988-06-01), Moslehi et al.
patent: 4818050 (1989-04-01), Duthie
patent: 5022730 (1989-12-01), Cimini et al.
patent: 5044715 (1990-02-01), Kawachi et al.
patent: 5148507 (1992-09-01), Tanisawa
patent: 5321782 (1994-06-01), Mugino et al.

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