All fiber wavelength selective optical switch

Details All fiber wavelength selective optical switch All fiber wavelength selective optical switch

1994-09-23

1995-08-29

Gonzalez, Frank

Optical waveguides

With optical coupler

Switch

385 24, 385 37, G02B 628

Patent

active

054468094

ABSTRACT:
An all fiber wavelength selective optical switch has one or more 1.times.N input optical couplers 20,120, each having an input signal with a plurality of wavelengths .lambda..sub.1, .lambda..sub.2, .lambda..sub.3. The output signals from the couplers 20,120 are connected to fibers 26,32,126,158 having Bragg gratings impressed therein, each having a central reflection wavelength, and each having a tuner attached thereto for detuning a central reflection wavelength of the gratings from a base wavelength corresponding to a wavelength of the input signal. For a given grating to pass a particular wavelength of the input signal that grating must be detuned. The fibers 26,32,126,158 are also connected to one or more N.times.1 couplers 66,98 to combine input signals from to different input couplers. The switch allows any combination of input wavelengths from any input signal to be selectively switched to one or more output ports.

REFERENCES:
patent: 3871743 (1975-03-01), Fulenwider
patent: 4725110 (1988-02-01), Glenn et al.
patent: 4900119 (1990-02-01), Hill et al.
patent: 5007705 (1991-04-01), Morey et al.
patent: 5043975 (1991-08-01), McMahon
patent: 5101460 (1992-03-01), Richard
Technical Digest OFC '91, San Diego, California, Feb. 18-22, 1991, pp. 96-99, W. W. Morey, "Tunable Narrow-Line Bandpass Filter Using Fiber Gratings".

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