Optical delay line

Details Optical delay line Optical delay line

1993-03-26

1994-11-22

Gonzalez, Frank

Optical waveguides

With optical coupler

Plural

385 27, 385 37, 385 46, 359114, 359130, G02B 628

Patent

active

053675860

ABSTRACT:
A variable optical delay line which can delay an optical signal by a selected interval of time comprises an input wavelength router connected to an output wavelength router by means of optical waveguides of different lengths. A wavelength shifter coupled to the input of the input wavelength router shifts the wavelength of the received signal to a desired wavelength. Depending on the wavelength of the signal from the wavelength shifter, the received signal is directed to a specific one of the waveguides of different lengths to provide a delay which is controllable. The output wavelength router directs the optical signals from the various waveguides of different lengths to a common output waveguide.

REFERENCES:
patent: 4890893 (1990-01-01), Smoot
patent: 5002350 (1991-03-01), Dragone
patent: 5101455 (1992-03-01), Goutzoulis
patent: 5125051 (1992-06-01), Goutzoulis et al.
patent: 5136671 (1992-08-01), Dragone
patent: 5191627 (1993-03-01), Haas et al.
patent: 5243672 (1993-09-01), Dragone
"High Performance Optical Wavelength Shifter", B. Glance et al., Electronics Letters, 27 Aug. 1992, vol. 28 No. 18, pp. 1714-1715.
P. Gavignet-Morin, et al. "Multiwavelength Optical Buffer Based On Fiber Delay Lines . . . ", Optical Society of America 100C'93 Conference, Feb. 21-26, 1993, San Jose, Calif. pp. 145-146.

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