Wavelength tunable multiplexing and demultiplexing filter...

Details Wavelength tunable multiplexing and demultiplexing filter... Wavelength tunable multiplexing and demultiplexing filter...

2006-10-10

2006-10-10

Sedighian, M. R. (Department: 2613)

Optical communications

Multiplex

Wavelength division or frequency division

C398S043000, C398S079000, C398S149000, C359S629000, C359S634000

Reexamination Certificate

active

07120361

ABSTRACT:
Two set of filter chips on the upper and lower surfaces, each of which has a wavelength characteristic corresponding to each wavelength component of wavelength-multiplexed light, are mounted on a transparent substrate to make an optical filter element. When the wavelength-multiplexed light is inputted to the optical filter element via an optical fiber and when the same light components as those having the wavelengths demultiplexed by an optical fiber is also inputted, the demultiplexed light and the replaced wavelength-multiplexed light will be obtained at another optical fibers, respectively.

REFERENCES:
patent: 5812291 (1998-09-01), Bendelli et al.
patent: 6008920 (1999-12-01), Hendrix
patent: 10-093505 (1998-10-01), None
patent: 11-027239 (1999-01-01), None
J.S Patel and Y. Silberberg, Liquid Crystal and Grating-Based Multiple-Wavelength Cross-Connect Switch, IEEE Photonics Technology Letters, May 1995, pp. 514-516, vol. 7, No. 5, IEEE, Red Banks, NJ, USA.
H.G. Limberger et al., Wideband Tunable Fibre Bragg Grating Filters, European Conference on Optical Communications (ECOC) 1999, Sep. 1999, pp. 156-159, ECOC, Nice, France.

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