Efficient optical wavelength multiplexer/de-multiplexer

Details Efficient optical wavelength multiplexer/de-multiplexer Efficient optical wavelength multiplexer/de-multiplexer

1994-09-23

1997-08-12

Healy, Brian

Optical waveguides

With optical coupler

Plural

385 15, 385 18, 385 27, 385 37, 385 42, 359127, 359130, G02B 628, H04J 1402

Patent

active

056574061

ABSTRACT:
An efficient wavelength multiplexer/demultiplexer includes a plurality of 2.times.2 optical couplers 122,180,200,220, each having a pair of matched gratings 130,142; 182,184; 202,204; and 222,224, having bandpass wavelengths .lambda..sub.1, .lambda..sub.2, .lambda..sub.3, .lambda..sub.4, respectively, attached to two of the ports. An input signal 116 enters a port 120 and is split and reflected off the gratings 130,142 and then recombined so as to provide all the input signal 116 at an output port 150 and no reflection out of the port 120. Another input signal 154 is incident on the grating 142 which is passed by the grating 142 and is coupled onto the output port 150 with the signal 116 as a signal 160. A similar arrangement exists for the other couplers 180,200,220 connected in series, each of which adds another input wavelength. Alternatively, in a de-multiplexing application the signal 116 may be broadband and the signals 154,190,206,230 would be separate output wavelengths.

REFERENCES:
patent: 4900119 (1990-02-01), Hill et al.
patent: 5048909 (1991-09-01), Henry et al.
patent: 5093876 (1992-03-01), Henry et al.
patent: 5218655 (1993-06-01), Mizrahi
patent: 5271024 (1993-12-01), Huber
patent: 5425116 (1995-06-01), Dragone et al.
patent: 5446809 (1995-08-01), Fritz et al.
Patent Abstracts of Japan, vol. 7, No. 239 (E-206) 25 Oct. 1983 &JP,A,58 129848 (Nippon Denshin Denwa Kosha) 3 Aug. 1983.
Manuel Lopez-Amo et al., "Wavelength-division-multiplexed distributed optical fiber amplifier bus network for data and sensors," Optic Letters, vol. 18, No. 14, Jul. 15, 1993, pp. 1159-1161.
C. M. Ragdale et al., "Integrated three channel laser and optical multiplexer for narrowband wavelength division multiplexing," Electronics Letters, vol. 30, No. 11, 26 May 1994, pp. 897-898.
F. Bilodeau et al., "High-Return-Loss Narrowband All-Fiber Bandpass Bragg Transmission Filter," IEEE Photonics Technology Letters, vol. 6, No. 1, Jan. 1994, pp. 80-32.
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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