Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1995-12-12
1998-05-26
Negash, Kinfe-Michael
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359158, 359181, 359188, 359156, H04B 1016, H04B 1004
Patent
active
057575290
ABSTRACT:
The apparatus of the invention regenerates solitons in-line by synchronously modulating the solitons using a non-linear optical loop mirror as an optical modulator, the NOLM modulator being controlled by a clock signal recovered from the soliton signal by clock recovery means which may be all-optical means or electro-optical means. The NOLM includes an input coupler which may be a 50/50 coupler or an asymmetrical coupler. Said input coupler may be a 2x2 coupler or a 3x3 coupler. In a particular embodiment, the regenerating system further includes a plurality of optical amplifiers and a plurality of "guiding" filters. Application to long-distance soliton optical telecommunications.
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patent: 5369520 (1994-11-01), Avramopoulos et al.
patent: 5548433 (1996-08-01), Smith
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Jinno M et al, "All-Optical Regenerator Based on Nonlinear Fibre Sagnac Interferometer", Electronics Letters, vol. 28, No. 14, Jul. 2, 1992, pp. 1350-1352, XP 000307842.
Sandel D et al, "Polarization-independent Regenerator with Nonlinear Optoelectronic Phase-Locked Loop", Optical Fiber Communication, OFC'94, Technical Digest, vol. 4, No. FG2, Feb. 20-25, 1994, pp. 310-311.
Bigo Sebastien
Desurvire Emmanuel
ALCATEL N.V.
Negash Kinfe-Michael
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