Multiwavelength add/drop multiplexer

Details Multiwavelength add/drop multiplexer Multiwavelength add/drop multiplexer

1996-02-20

1998-05-12

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359124, 385 24, H04J 1402

Patent

active

057514569

ABSTRACT:
The invention relates to a multiwavelength add/drop multiplexer for use in an optical fiber communication system having a main optical fiber. The multiplexer includes an optical element, in the form of an optical circulator, arranged to direct substantially all of the light transmitted in a predetermined direction along the main optical fiber into a branch optical fiber regardless of wavelength. The branch optical fiber includes a transmission filter, in the form of a Fabry-Perot filter, arranged to transmit light of a predetermined wavelength and reflect the non-transmitted light back towards said main optical fiber for continued propagation along said main optical fiber. The multiplexer also includes a receiver for receiving the transmitted light, and further includes a transmitter arranged to transmit optical data signals along said branch optical fiber, through said transmission filter and towards said optical element, for propagation along said main optical fiber.

REFERENCES:
patent: 5231529 (1993-07-01), Kaede
patent: 5596448 (1997-01-01), Onaka et al.

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