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Article: Bending loss in optical waveguides for nonplanar laser array applications

TitleBending loss in optical waveguides for nonplanar laser array applications
Authors
Issue Date1992
PublisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp
Citation
Journal Of Applied Physics, 1992, v. 71 n. 6, p. 2513-2520 How to Cite?
AbstractThe optical transmission loss in dielectric waveguide bends is investigated using the finite-difference time-domain approach. An absorbing boundary condition, applied to reduce the size of the mesh, is proven to work very well for the waveguide structure. The desired modes are excited using the solution of a one-dimensional waveguide structure. The bending loss is then obtained using the methods of overlap integral and least-square fit. The structures of multiple-bend waveguides are analyzed. It is shown that the coupling between neighboring bends leads to direct transmission to the waveguide section on the aligned plane in addition to the transmission through the zigzag path. The bending loss in nonplanar laser arrays is investigated in detail. The possibility of having a shallow groove depth laser array is then discussed. Lateral lasing is prohibited by the radiation loss due to the bend. It is observed that the optical coupling between neighboring emitters is enhanced by the shallow groove depth, implying that phase-locked array modes can be obtained.
Persistent Identifierhttp://hdl.handle.net/10722/182693
ISSN
2015 Impact Factor: 2.101
2015 SCImago Journal Rankings: 0.603
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLee, SMen_US
dc.contributor.authorChew, WCen_US
dc.contributor.authorChuang, SLen_US
dc.contributor.authorColeman, JJen_US
dc.date.accessioned2013-05-02T05:16:28Z-
dc.date.available2013-05-02T05:16:28Z-
dc.date.issued1992en_US
dc.identifier.citationJournal Of Applied Physics, 1992, v. 71 n. 6, p. 2513-2520en_US
dc.identifier.issn0021-8979en_US
dc.identifier.urihttp://hdl.handle.net/10722/182693-
dc.description.abstractThe optical transmission loss in dielectric waveguide bends is investigated using the finite-difference time-domain approach. An absorbing boundary condition, applied to reduce the size of the mesh, is proven to work very well for the waveguide structure. The desired modes are excited using the solution of a one-dimensional waveguide structure. The bending loss is then obtained using the methods of overlap integral and least-square fit. The structures of multiple-bend waveguides are analyzed. It is shown that the coupling between neighboring bends leads to direct transmission to the waveguide section on the aligned plane in addition to the transmission through the zigzag path. The bending loss in nonplanar laser arrays is investigated in detail. The possibility of having a shallow groove depth laser array is then discussed. Lateral lasing is prohibited by the radiation loss due to the bend. It is observed that the optical coupling between neighboring emitters is enhanced by the shallow groove depth, implying that phase-locked array modes can be obtained.en_US
dc.languageengen_US
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jspen_US
dc.relation.ispartofJournal of Applied Physicsen_US
dc.titleBending loss in optical waveguides for nonplanar laser array applicationsen_US
dc.typeArticleen_US
dc.identifier.emailChew, WC: wcchew@hku.hken_US
dc.identifier.authorityChew, WC=rp00656en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1063/1.351369en_US
dc.identifier.scopuseid_2-s2.0-0344508291en_US
dc.identifier.volume71en_US
dc.identifier.issue6en_US
dc.identifier.spage2513en_US
dc.identifier.epage2520en_US
dc.identifier.isiWOS:A1992HJ65500005-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLee, SM=36347001700en_US
dc.identifier.scopusauthoridChew, WC=36014436300en_US
dc.identifier.scopusauthoridChuang, SL=7202515804en_US
dc.identifier.scopusauthoridColeman, JJ=7402804004en_US

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