Coherent light generators – Particular active media – Semiconductor
Patent
1996-10-04
1998-11-10
Bovernick, Rodney B.
Coherent light generators
Particular active media
Semiconductor
372 23, 372 45, 372 96, 372101, H01S 319, H01S 310, H01S 308
Patent
active
058355170
ABSTRACT:
A compact WDM optical device can demultiplex an optical laser signal containing several different wavelengths corresponding to particular channels, and, in reverse operation operate as a multiplexer to interleave several different wavelengths into a multiplexed multi-channel optical laser signal with improved insertion loss characteristics. The optical device includes a linear array of passive resonant optical cavities, in the form of Fabry-Perot filters, extending in a lateral direction and an integral array of associated microlenses extending in the lateral direction. Each microlens has a center which is offset from the central longitudinal axis of an associated Fabry-Perot filter to reflect laser radiation through the device. Each optical cavity is tuned by adjusting the longitudinal dimension thereof to a particular wavelength contained in the multi-channel optical signal. A stepped-wavelength steered laser radiation source for the optical device uses a VCSEL array with offset microlenses. With an additional row of microlenses the optical device can be used for wavelength routing and channel dropping applications. A stepped-wavelength WDM VCSEL array can be similarly organized to form a WDM combiner or multiplexer.
REFERENCES:
patent: 5073041 (1991-12-01), Rastani
patent: 5216263 (1993-06-01), Paoli
patent: 5309468 (1994-05-01), Makiuchi
patent: 5425043 (1995-06-01), Holonyak, Jr. et al.
patent: 5633527 (1997-05-01), Lear
patent: 5724376 (1998-03-01), Kish, Jr. et al.
Hirabayashi et al. "Tunable Wavelength-Selective Demultiplexer Using a Liquid-Crystal Filter" IEEE Photonics Tech. Letters, vol. 4, No. 7, Jul. 1992, pp. 737-740.
Pezeshki et al. "Vertical Cavity Waveguide Spectrometer for WDM Communication" Proceedings of the Lasers and Electro-Optics Society Annual Meeting, IEEE pp. 198-199, Nov. 15, 1993.
Strzelecka et al. "Monolithic Integration of Refractive Lenses with Vertical Cavity Lasers and Detectors for Optical Interconnections" Proceedings of the SPIE, vol. 2691, pp. 43-53. Feb., 1996.
Article--Soole et al., "Wavelength Precision of Monolithic InP Grating Multiplexer/Demultiplexers", Electronic Letters, 14 Apr. 1994, vol. 30, No. 8, pp. 664-665.
Article--Bissessur et al., "Tunable Phased-Array Wavelength Demultiplexer on InP", Electronic Letters, 5 Jan. 1995, vol. 31, No. 1, pp. 32-33.
U.S. application No. 08/635,798, Filed Apr. 22, 1996, "Vertical Cavity Lasers with Monolithically Integrated Refractory Microlenses" now abandoned.
Jayaraman Vijaysekhar
Peters Frank H.
Bovernick Rodney B.
Genco, Jr. Victor M.
Leung Quyen Phan
W. L. Gore & Associates, Inc.
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