Optical wavelength-division switching system with coherent optic

Details Optical wavelength-division switching system with coherent optic Optical wavelength-division switching system with coherent optic

1987-10-15

1989-02-21

Griffin, Robert L.

Multiplex communications

Wide area network

Packet switching

370 1, 455600, H04B 900

Patent

active

048072273

ABSTRACT:
An optical wavelength-division switching system comprises means for reproducing an electric signal for each channel from a wavelength division multiplexed optical signal, and means for converting the electric signal to a modulated optical signal. The means for reproducing the electric signal can be composed of an optical heterodyne or homodyne detection system, while the means for converting the electric signal can be composed of a distributed feedback laser diode having an optical frequency modulating characteristic so that the number of channels is much increased with the decrease of crosstalk.

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T. Okoshi, "Recent Advances in Coherent Optical Fibre Communication Systems", IOOC-ECOC '85, pp. 73-80.
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Tohmori et al., "Letter: Wavelength Tunable 1.5 um GalnAsP/InP Bundle-Integrated Guide Distributed Bragg Reflector (BIG-DBR) Lasers", The Transactions of the IECE of Japan, vol. E-68, No. 12, Dec. 1985, pp. 788-790.
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