Mach-Zehnder interferometric devices with composite fibers

Details Mach-Zehnder interferometric devices with composite fibers Mach-Zehnder interferometric devices with composite fibers

1997-06-06

1999-08-24

Ullah, Akm E.

Optical waveguides

With optical coupler

Particular coupling structure

356345, G02B 626

Patent

active

059434589

ABSTRACT:
A Mach-Zehnder wavelength selective device is made using one or more composite optical fibers each incorporating a phase shift region having one effective refractive index spliced between coupling regions having a different effective refractive index. The optical path length difference or phase delay induced by each such composite fiber is a linear function of the length of the phase shift region.

REFERENCES:
patent: 5295205 (1994-03-01), Miller et al.
patent: 5351325 (1994-09-01), Miller et al.
patent: 5499308 (1996-03-01), Arai et al.
patent: 5703975 (1997-12-01), Miller et al.
"Fiber Optic Tunable Microwave Transversal Filter", Michael Y. Frankel and Ronald D. Esman, IEEE Photonics Technology Letters, vol. 7, No. 2, pp. 191-193, Feb. 7, 1995.
Patent Abstracts of Japan, vol. 017, No. 669 (P-1657), Dec. 9, 1993 & JP-05 224252 A (Nippon Telegr & Teleph Corp), Sep. 3, 1993, Abstract.

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