Patent Number: 6,169,604

Title: Nonlinear interferometer for fiber optic dense wavelength division multiplexer utilizing a phase bias element to separate wavelengths in an optical signal

Abstract: A nonlinear interferometer wavelength separation mechanism for use in a dense wavelength division multiplexer is provided. The mechanism includes a first glass plate optically coupled to a second glass plate, forming a space therebetween; a mechanism for introducing a phase shift at least one channel of an optical signal; and a mechanism for broadening a pass band of the optical signal. The nonlinear interferometer of the present invention allows a dense wavelength division multiplexer to have an ease in alignment and a higher tolerance to drifts due to the increase in the width of the pass band. It also has the added ability of being passively stable to temperature.

Inventors: Cao; Simon X. F. (San Mateo, CA)

Assignee: Avanex Corporation

International Classification: G01J 3/12 (20060101); G01J 3/26 (20060101); G02B 6/34 (20060101); G01B 009/02 ()

Expiration Date: 01/02/2018