Multiport optical devices

Details Multiport optical devices Multiport optical devices

1990-01-12

1991-09-24

Ullah, Akm

Optical waveguides

With optical coupler

Switch

385 33, 359127, G02B 632, G02B 626

Patent

active

050509543

ABSTRACT:
A multi-port optical device for transferring optical signals, or portion of optical signals, from one transmission element to another is disclosed. The inventive optical device comprises a pair of graded index lenses having an interposed Fabry Perot etalon. Moreover, the functionality of the device may be modified by varying the transmission characteristics of the etalon, which may be effected by varying the optical path length of the etalon. In operation, the optical device utilizes the graded index lenses as image transfer lenses between transmission elements wherein wavelength selectivity therebetween is afforded by the filtering mechanism associated with the etalon. The optical device may be used as a wavelength multiplexer or as an optical splitter. Moreover, by utilizing a piezoelectric transducer, the optical device may be converted to operate as an optical switch.

REFERENCES:
patent: 4111524 (1978-09-01), Tomlinson
patent: 4213677 (1980-07-01), Sugimoto et al.
patent: 4253728 (1981-03-01), Venkatesan
patent: 4525067 (1985-06-01), Hernandez
patent: 4533247 (1985-07-01), Epworth
patent: 4550975 (1985-11-01), Levinson et al.
patent: 4768849 (1988-09-01), Hicks, Jr.
patent: 4813756 (1989-03-01), Frenkel et al.
patent: 4830451 (1989-05-01), Stone
patent: 4834485 (1989-05-01), Lee
Tomlinson, Applied Optics, vol. 19, No. 7, Apr. 2, 1980, pp. 1127-1138.
Frenkel et al., Electronics Letters, 4th Feb. 1988, vol. 24, No. 3, pp. 159-161.

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