Optical routing device having a substantially flat passband

Details Optical routing device having a substantially flat passband Optical routing device having a substantially flat passband

1997-05-13

2000-04-11

Ngo, Hung N.

Optical waveguides

With optical coupler

Input/output coupler

385 46, 385 24, G02B 626

Patent

active

060496444

ABSTRACT:
An optical apparatus having a specifiable passband width comprises a first free space region that has at least one input port configured to receive light waves traveling through a first waveguide coupled to the input port. The first waveguide further comprises a longitudinal slot that has a given length, L, and width, S, so as to produce the specifiable passband width. The optical apparatus further includes an optical grating that has a plurality of waveguides connected to the first free space region with the optical grating defined by a plurality of unequal length waveguides. A second free space region is coupled to the optical grating so as to receive light traveling through the optical grating. The second free space region further has at least one output port configured to provide light waves to a second waveguide coupled to the output port.

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C. Dragone, An NxN Optical Multiplexer Using a Planar Arrangement of Two Star Couplers, IEEE Photon. Technol. Lett., 3, pp. 812-815 (1991).

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