Device for extraction and re-insertion of an optical carrier in

Details Device for extraction and re-insertion of an optical carrier in Device for extraction and re-insertion of an optical carrier in

1994-07-06

1995-12-26

Boudreau, Leo H.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359119, 359125, 385 24, 385 39, H04J 1402

Patent

active

054790824

ABSTRACT:
The device includes a first optical circulator connected in series with the line (1e, 1u) in order to receive a signal stream including a carrier to be extracted, modulated by an information signal, and to transmit a signal stream including the same carrier, re-inserted into the stream after having being modulated with another information signal, and a second optical circulator connected to local information processing means, to which it supplies the extracted carrier and from which it receives the carrier to be re-inserted. Between the two circulators there is an optical-fibre bandpass filter that can be tuned to the carrier wavelength.

REFERENCES:
patent: 5231529 (1993-07-01), Kaede
patent: 5280549 (1994-01-01), Barnard et al.
patent: 5307195 (1994-04-01), Nicole
Oda et al., `An Optical FDM-Add/Drop Multiplexing Ring Network Utilizing Fiber Fabry-Perot Filters and Optical Circulators` IEEE Photonics Technology Letters, vol. 5, No. 7, Jul. 1993, pp. 825-828.
Electronics Letter, vol. 29, No. 10, 13 May 1993 Stevenage GB, pp. 905-907, XP 000367666 M. Fukutoku et al; "Wavelength-Division-Multiplexing Add/Drop Multiplexer Employing A Novel Polarisation Independent . . . ".
IEEE Photonics Technology Letters, vol. 5, No. 7, Jul. 1993 New York US, pp. 825-828, XP 000394492 K. Oda et al; `An Optical FDM-Add/Drop Multiplexing Ring Network Utilizing Fiber Fabry-Perot Filters and Optical . . . `.
Transactions of the Institute of Electronics and Communication Engineers of Japan, Section E, vol. E72, No. 10, Oct. 1989 Tokyo JP, pp. 1086-1088, XP 000074437 M. Koga et al, `Multi/Demultiplexer Using A 4-Port . . . `.

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