PERIODIC ARRAYED WAVEGUIDE GRATING MULTIPLEXER/DEMULTIPLEXER
The invention disclosed relates to a device for multiplexing / demultiplexin g a multi-band DWDM system, providing reduced insertion losses. The device comprises first and second planar waveguides, a light dispersive element having a periodic frequency spectrum, interconnecting the first and second...
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| creator | HNATIW, ALAN J.P DELISLE, VINCENT |
| description | The invention disclosed relates to a device for multiplexing / demultiplexin g a multi-band DWDM system, providing reduced insertion losses. The device comprises first and second planar waveguides, a light dispersive element having a periodic frequency spectrum, interconnecting the first and second planar waveguides, a plurality of N input waveguides, connected to the first planar waveguide, and a plurality of M output waveguides, connected to the second planar waveguide, wherein the M outputs are each separated by a frequency interval Af, the N inputs are each separated by M*Af, the free spectral rang e (FSR) = N*M*.DELTA.f, N is an integer greater than 1, and M is an integer equal to or greater than N. In one embodiment of the invention, wherein 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-band, to reduce wavelength centering errors. |
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The device comprises first and second planar waveguides, a light dispersive element having a periodic frequency spectrum, interconnecting the first and second planar waveguides, a plurality of N input waveguides, connected to the first planar waveguide, and a plurality of M output waveguides, connected to the second planar waveguide, wherein the M outputs are each separated by a frequency interval Af, the N inputs are each separated by M*Af, the free spectral rang e (FSR) = N*M*.DELTA.f, N is an integer greater than 1, and M is an integer equal to or greater than N. In one embodiment of the invention, wherein 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-band, to reduce wavelength centering errors.</description><language>eng ; fre</language><subject>ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; MULTIPLEX COMMUNICATION ; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS ; OPTICS ; PHYSICS</subject><creationdate>2008</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20080812&DB=EPODOC&CC=CA&NR=2328696C$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25555,76308</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20080812&DB=EPODOC&CC=CA&NR=2328696C$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HNATIW, ALAN J.P</creatorcontrib><creatorcontrib>DELISLE, VINCENT</creatorcontrib><title>PERIODIC ARRAYED WAVEGUIDE GRATING MULTIPLEXER/DEMULTIPLEXER</title><description>The invention disclosed relates to a device for multiplexing / demultiplexin g a multi-band DWDM system, providing reduced insertion losses. The device comprises first and second planar waveguides, a light dispersive element having a periodic frequency spectrum, interconnecting the first and second planar waveguides, a plurality of N input waveguides, connected to the first planar waveguide, and a plurality of M output waveguides, connected to the second planar waveguide, wherein the M outputs are each separated by a frequency interval Af, the N inputs are each separated by M*Af, the free spectral rang e (FSR) = N*M*.DELTA.f, N is an integer greater than 1, and M is an integer equal to or greater than N. In one embodiment of the invention, wherein 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-band, to reduce wavelength centering errors.</description><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>MULTIPLEX COMMUNICATION</subject><subject>OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS</subject><subject>OPTICS</subject><subject>PHYSICS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2008</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLAJcA3y9HfxdFZwDApyjHR1UQh3DHN1D_V0cVVwD3IM8fRzV_AN9QnxDPBxjXAN0ndxReLxMLCmJeYUp_JCaW4GeTfXEGcP3dSC_PjU4oLE5NS81JJ4Z0cjYyMLM0szZ2PCKgCaCilD</recordid><startdate>20080812</startdate><enddate>20080812</enddate><creator>HNATIW, ALAN J.P</creator><creator>DELISLE, VINCENT</creator><scope>EVB</scope></search><sort><creationdate>20080812</creationdate><title>PERIODIC ARRAYED WAVEGUIDE GRATING MULTIPLEXER/DEMULTIPLEXER</title><author>HNATIW, ALAN J.P ; DELISLE, VINCENT</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CA2328696C3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre</language><creationdate>2008</creationdate><topic>ELECTRIC COMMUNICATION TECHNIQUE</topic><topic>ELECTRICITY</topic><topic>MULTIPLEX COMMUNICATION</topic><topic>OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS</topic><topic>OPTICS</topic><topic>PHYSICS</topic><toplevel>online_resources</toplevel><creatorcontrib>HNATIW, ALAN J.P</creatorcontrib><creatorcontrib>DELISLE, VINCENT</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>HNATIW, ALAN J.P</au><au>DELISLE, VINCENT</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>PERIODIC ARRAYED WAVEGUIDE GRATING MULTIPLEXER/DEMULTIPLEXER</title><date>2008-08-12</date><risdate>2008</risdate><abstract>The invention disclosed relates to a device for multiplexing / demultiplexin g a multi-band DWDM system, providing reduced insertion losses. The device comprises first and second planar waveguides, a light dispersive element having a periodic frequency spectrum, interconnecting the first and second planar waveguides, a plurality of N input waveguides, connected to the first planar waveguide, and a plurality of M output waveguides, connected to the second planar waveguide, wherein the M outputs are each separated by a frequency interval Af, the N inputs are each separated by M*Af, the free spectral rang e (FSR) = N*M*.DELTA.f, N is an integer greater than 1, and M is an integer equal to or greater than N. In one embodiment of the invention, wherein 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-band, to reduce wavelength centering errors.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre |
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| subjects | ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY MULTIPLEX COMMUNICATION OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS |
| title | PERIODIC ARRAYED WAVEGUIDE GRATING MULTIPLEXER/DEMULTIPLEXER |
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