U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Optical time-division multiplexing

Patent 5331451 Issued on July 19, 1994. Estimated Expiration Date: Icon_subject July 6, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

High speed serial optical crossbar switch Patent #: 5115331
Issued on: 05/19/1992
Inventor: Gookin, et al.

Inventor

Assignee

Application

No. 907922 filed on 07/06/1992

US Classes:

398/98, Time division398/101By specific optical element

Examiners

Primary: Pascal, Leslie

Attorney, Agent or Firm

Foreign Patent References

  • 0137 EP. 04/24/1985
  • 3337282 DE. 04/24/1985
  • 0157128 JP 07/24/1986
  • 2113049 GB 07/24/1983

International Classes

H04J 014/02
H04J 014/08

Foreign Application Priority Data

1991-07-06 DE

Abstract

Optical time-division multiplexing of two or more digital optical input signals applied to an optical multiplex element to produce a single optical output signal is performed. In the multiplex element, the input signals are optically switched through in alternation, a through-switching time interval being shorter than the duration of a pulse of the input signal. An optical time-division multiplexer has at least one multiplex element to which at least two optical signal are input, the signals having carriers of different wavelengths. The signals are connected to an optical signal output via a junction. The signals can be switched through to the signal output in alternation by a switchable filter.

Other References

  • Habara et al., "Optical Switching Networks Using Tree-Structured Waveguide Optical Switches," Electronics and Communications in Japan 70, Nov. 1987, No. 11, Part I, pp. 118-127
  • Cada et al., "Two-Wavelength Optical Switching in a GaAs Multiple Quantum Well Directional Coupler," Applied Physics Letters 56 May 21, 1990, No. 21, pp. 2080-2082
  • Tucker et al., "Optical Time-Division Multiplexed Fiber Transmission Using Ti:LiNbO3 Waveguide Switch/Modulators" IEEE/IEICE Global Telecommunications Conference, Nov. 15-18, 1987, Tokyo, Japan, pp. 1302-1304
  • Tucker et al., "Optical Time-Division Multiplexing For Very High Bit-Rate Transmission," Journal of Lightwave Technology, Nov. 1988, No. 11, pp. 1737-1749
  • Tucker et al., "16 Gbit/s Fibre Transmission Experiment Using Optical Time-Division Multiplexing", Electronic Letters, vol. 23, No. 24, pp. 1270-1271, Nov. 19, 198
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