PERIODIC ARRAYED WAVEGUIDE GRATING DEMULTIPLEXER

The invention disclosed relates to a device for multiplexing/demultiplexing a multi-band DWDM system, providing reduced insertion losses. The device comprises first and second star couplers, a light dispersive element having a periodic frequency spectrum, interconnecting the first and second star co...

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Bibliographic Details
Main Authors HNATIW, ALAN J.P, DELISLE, VINCENT
Format Patent
LanguageEnglish
French
Published 18.06.2002
Edition7
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:The invention disclosed relates to a device for multiplexing/demultiplexing a multi-band DWDM system, providing reduced insertion losses. The device comprises first and second star couplers, a light dispersive element having a periodic frequency spectrum, interconnecting the first and second star couplers, a plurality of N input waveguides, connected to the first star coupler, and a plurality of M output waveguides, connected to the second star coupler, wherein the M outputs are each separated by a frequency interval .DELTA.f, the N inputs are each separated by M.DELTA.f, the free spectral range(FSR) = NM.DELTA.f, N is ~n integer greater than 1, and M is an integer equal to or greater than N. In o ne embodiment of the invention, wherein the the telecommunications window is divided into a plurality of sub-bands of M channels, a temperature controller is included to provide individual temperature set points for each sub-hand, to reduce wavelength centering errors.
Bibliography:Application Number: CA20002328696