Optical component wherein either an optical field distribution o

Details Optical component wherein either an optical field distribution o Optical component wherein either an optical field distribution o

1997-02-21

1998-11-17

Ngo, John

Optical waveguides

With optical coupler

Input/output coupler

385 46, 385 33, 385 37, 385 36, 385 45, 385 43, G02B 626

Patent

active

058388494

ABSTRACT:
An optical waveguide having a light receiving end and a propagation mode with a double-hump shaped optical field distribution at the light receiving end to receive light into the optical waveguide. The light incident on the light receiving end typically has a single-hump shaped optical field distribution. Overlap in the optical field distribution of the incident light and the optical field distribution of the propagation mode of the optical waveguide causes the light to be received by the optical waveguide. Alternatively, the optical waveguide can have a propagation mode with a single-hump shaped optical field distribution at the light receiving end, and the incident light can have a double-hump shaped optical field distribution at the light receiving end. These configuration provide a much greater range of transmission as compared to a typical case where the incident light has a single-hump shaped optical field distribution and the waveguide has a propagation mode with a single-hump shaped optical field distribution at the light receiving end. The present invention is especially useful for use in an optical multiplexer or an optical demultiplexer which uses an angular dispersion element, such as a diffraction grating.

REFERENCES:
Watanabe et al; "New 2-Channel Multiplexer Using Polarization"; Electronic Letters, 5th Feb. 1981, vol. 17 No. 3; pp.133-135.
M. Shirasaki, Temperature Independent Interferometer For WDM Filters, Paper WeD.1.6 ECOC '96 (European Conference on Optical Communication), Sep. 18, 1996.
M. Shirasaki, Filtering Characteristics of Virtually-Imaged Phased Array, Presented at IPR (Integrated Photonics Research) Topical Meeting Paper IMC3, Apr. 29, 1996, Boston, MA.

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