Optical switch

Details Optical switch Optical switch

1992-09-11

1995-07-11

Ullah, Akm E.

Optical waveguides

With optical coupler

Switch

G02B 600

Patent

active

054328730

ABSTRACT:
An optical switch comprises a substrate, a first thin film layer formed on the substrate and including a first optical waveguide having a coupling portion and tapered portions therein, a clad layer formed on the thin film layer, a second thin film layer formed on the clad layer and including a second optical waveguide having a coupling portion and tapered portions, wherein a compound including a photochromic material is contained in the clad layer.

REFERENCES:
patent: 4805975 (1989-02-01), Utaka et al.
patent: 5080931 (1992-01-01), Trundle et al.
patent: 5091984 (1992-02-01), Kobayashi et al.
"Patent Abstract of Japan Appl. " vol. 13, No. 165 Apr. 20, 1989 The Patent Office Japanese Govt. pp. 51, 860.
"The Research and Study Report I" Japanese Electronic Industry Devel. Association, 1988.
"The Institute of Electronics, Information & Communication Engineers" The Summaries C-292 of The Lecturers at the Spring Convention 1991.
Patent Abstracts of Japan, Unexamined Applications, P. Fiel, vol. 11, No. 178, Jun. 6, 1987 The Patent Office Japanese Government, pp. 43, 584.
Patent Abstracts of Japan, Unexamined Applications, P. Field, vol. 13, No.165, Apr. 20, 1989 The Patent Office Japanese Government, pp. 51, 860.

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