Compact mach-zehnder interferometer and wavelength reference emp

Details Compact mach-zehnder interferometer and wavelength reference emp Compact mach-zehnder interferometer and wavelength reference emp

1998-03-05

2000-09-05

Healy, Brian

Optical waveguides

With optical coupler

Particular coupling structure

385 14, 385 39, 385 42, 385130, 385132, 356345, G02B 626, G01B 902

Patent

active

061155209

ABSTRACT:
The present invention includes a MZI comprising a pair of folded waveguides disposed between a pair of couplers. Each folded waveguide comprises a pair of segments intersecting at a reflector. The respective reflectors are different distances from the couplers to provide a major portion of the differential path length between the two arms. In a preferred embodiment, the reflectors are polysilicon mirrors and can be formed by etching through the intersecting waveguides and depositing polysilicon. The result is a compact MZI that can be used as a multiwavelength reference for a laser light source on a common silicon optical bench chip.

REFERENCES:
patent: 4659923 (1987-04-01), Hicks, Jr.
patent: 4831631 (1989-05-01), Haeussler et al.
patent: 5473459 (1995-12-01), Davis
patent: 5737459 (1998-04-01), Epworth et al.
patent: 5778014 (1998-07-01), Islam

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