Optical multiplexer and demultiplexer

Details Optical multiplexer and demultiplexer Optical multiplexer and demultiplexer

H - Electricity

04

J

325/1, 345/6, 36

H04J 1/00 (2006.01) G02B 6/34 (2006.01) H04J 14/02 (2006.01)

Patent

CA 1126421

ABSTRACT OF THE DISCLOSURE An optical multiplexer and/or optical demultiplexer for multiplexing and/or demultiplexing a plurality of wave- lengths comprises a plurality of optical filter each of which transmits a predetermined wavelength and reflects other wavelengths, said optical filters being arranged so that an optical beam is transmitted or reflected via each optical filter in sequence in a zigzag fashion. A light source or light detector is provided behind each optical filter to project or receive a collimated optical beam. The angle of incidence when a beam is applied to an optical filter is small. And, another optical means is provided to connect the present optical multiplexer and/or demultiplexer with an outside optical fiber. The transmission wavelength of each optical filter is different from the others.

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