Stress effects in prism coupling measurements of thin polymer films

Basit Öğe Kaydı
dc.contributor.authorAgan, Sedat
dc.contributor.authorAy, Feridun
dc.contributor.authorKocabaş, A.
dc.contributor.authorAydınlı, A.
dc.date.accessioned2020-06-25T17:40:45Z
dc.date.available2020-06-25T17:40:45Z
dc.date.issued2005
dc.departmentKırıkkale Üniversitesi
dc.descriptionAy, Feridun/0000-0003-2255-1156; Kocabas, Askin/0000-0002-6930-1202
dc.description.abstractDue to the increasingly important role of some polymers in optical waveguide technologies, precise measurement of their optical properties has become important. Typically, prism coupling to slab waveguides made of materials of interest is used to measure the relevant optical parameters. However, such measurements are often complicated by the softness of the polymer films when stress is applied to the prism to couple light into the waveguides. In this work, we have investigated the optical properties of three different polymers, polystyrene (PS), polymethyl-methacrylate (PMMA), and benzocyclobutane (BCB). For the first time, the dependence of the refractive index, film thickness, and birefringence on applied stress in these thin polymer films was determined by means of the prism coupling technique. Both symmetric trapezoid shaped and right-angle prisms were used to couple the light into the waveguides. It was found that trapezoid shaped prism coupling gives better results in these thin polymer films. The refractive index of PMMA was found to be in the range of 1.4869 up to 1.4876 for both TE and TM polarizations under the applied force, which causes a small decrease in the film thickness of up to 0.06 mum. PMMA waveguide films were found not to be birefringent. In contrast, both BCB and PS films exhibit birefringence albeit of opposing signs.en_US
dc.identifier.citationclosedAccessen_US
dc.identifier.doi10.1007/s00339-003-2222-5
dc.identifier.endpage345en_US
dc.identifier.issn0947-8396
dc.identifier.issn1432-0630
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-10644220312
dc.identifier.scopusqualityQ2
dc.identifier.startpage341en_US
dc.identifier.urihttps://doi.org/10.1007/s00339-003-2222-5
dc.identifier.urihttps://hdl.handle.net/20.500.12587/3542
dc.identifier.volume80en_US
dc.identifier.wosWOS:000225864600026
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer Heidelbergen_US
dc.relation.ispartofApplied Physics A-Materials Science & Processing
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleStress effects in prism coupling measurements of thin polymer filmsen_US
dc.typeArticle

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