Optical grating comprising a plurality of side-by-side outfeed e

Details Optical grating comprising a plurality of side-by-side outfeed e Optical grating comprising a plurality of side-by-side outfeed e

1991-08-26

1993-07-06

Lee, John D.

Optical waveguides

With optical coupler

Particular coupling structure

385 46, 385 24, 359569, G02B 634

Patent

active

052261000

ABSTRACT:
An optical grating being formed by a waveguide branching structure having a single infeed end face for infeeding an optical wave to be coupled into the grating, said branching structure is composed of a strip-like optical waveguide that proceeds from the infeed end face in a tree-like branching fashion and ends at the outfeed end faces, the distance between the infeed end face and each of the outfeed end faces can be the same or be different, as desired. The outfeed end faces can also be arranged to extend obliquely to the propagation direction of the optical wave being propagated in the grating.

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Takahashi et al., "Arrayed-Waveguide Grating for Wavelength Division Multi/Demultiplexer with Nanometre Resolution", Electronics Letters, Jan. 18, 1990, vol. 26, No. 2, pp. 87-88.

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