Unit for modulating an optical pulse series in conformity with a

Details Unit for modulating an optical pulse series in conformity with a Unit for modulating an optical pulse series in conformity with a

1996-03-05

1997-04-29

Lee, John D.

Optical waveguides

With optical coupler

Switch

359173, 359188, 385 24, G02B 635

Patent

active

056257279

ABSTRACT:
The invention relates to an optical unit for generating an optical data signal in conformity with a data pattern. The unit has an input for receiving the data pattern with a modulation period T, a pulsed laser for supplying an optical pulse series having a pulse period n.T and a pulse duration .tau., in which n is an integer, and a converting unit for converting this pulse series into an optical data signal in conformity with the data pattern. The converting unit is a radiation-controlled optical switch. This switch has a first input for receiving the data pattern in the form of an optical pulse series whose pulses have a pulse width b, a second input for receiving the optical pulse series from the pulsed laser for sampling the data pattern during periods when the switch is open, and an output for supplying a data pulse series having a pulse width .epsilon..b, in which 0 <.epsilon.<1.

REFERENCES:
patent: 5151818 (1992-09-01), Thijs et al.
patent: 5155779 (1992-10-01), Avramopoulos et al.
Sokoloff et al., "Performance of a . . . A Terahertz Optical Asymmetric Demultiplexer (TOAD)", IEEE Photonics Technology Letters, vol. 6, No. 1, Jan. 1994. pp. 98-100.
Dolfi, "High-Speed Devices and Subsystems", OFC '94 Technical Digest, pp. 74-75, Paper WBI, 1994 [no month].
Doran et al., "Nonlinear-optical loop mirror", Optics Letters, vol. 13, No. 1, Jan. 1988, pp. 56-58.

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