Waveguide type optical multiplexer/demultiplexer with a wave gui

Details Waveguide type optical multiplexer/demultiplexer with a wave gui Waveguide type optical multiplexer/demultiplexer with a wave gui

1988-08-31

1990-11-13

Orsino, Joseph A.

Multiplex communications

Wide area network

Packet switching

350 9613, 455612, H04B 1000

Patent

active

049707132

ABSTRACT:
A waveguide type optical multiplexer/demultiplexer in which a directional coupler made of a three-layer structure wherein core waveguides (refractive index n.sub.c : n.sub.c >n.sub.b) and a cladding (refractive index n.sub.r : n.sub.r <n.sub.c) are successively stacked on a low refractive index layer (refractive index n.sub.b), is provided with a thin film heater in or on the cladding, and a voltage is applied across the heater.

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patent: 4752120 (1988-06-01), Shimizu
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patent: 4786130 (1988-11-01), Georgiou et al.
patent: 9722081 (1988-01-01), Fujito
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Handbook on Optical Communications, p. 90, published by Kabushiki-Kaisha Kagaku Shinbun-sha, Aug. 1984.
Imoto, "Guided Wave Multi/Demultiplexers with Compensation for Centre Wavelength Shift by Fabrication Process Fluctations", Elect. Letters, vol. 23, #14, 7-87.
Toba, "5 GHz-spaced Eight Channel Wave Tunable Multi/Demultiplexers for Optical FDM Transmission Systems", Electronic Letters, vol. 23, #15, 7-87.
Ioto, "Guided Wave Multi-Demultiplexers with High Stopband Rejection", Elect. Letters, vol. 23, #9, 4-87, pp. 472-473.
Personick, "Switches Take to Optics", Electronics Week, 3-18-85, pp. 55-58.

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