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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 9 — Apr. 26, 2010
  • pp: 8896–8905

Study of optical anisotropies in benzocyclobutene thin films for the efficient design of optical waveguide devices

Md. Faruque Hossain, Hau Ping Chan, and Mohammad Afsar Uddin  »View Author Affiliations

Optics Express, Vol. 18, Issue 9, pp. 8896-8905 (2010)

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We study the in-plane/out-of-plane anisotropies in refractive indices (n) and in thermo-optic coefficients (dn/dT) of benzocyclobutene (BCB) thin film on a substrate. Both nonoxidized and oxidized films are investigated. Aside from the stress-induced effects, oxidation has significant influence on the refractive index anisotropy. The dependence of the anisotropy on each of the thermal stress and the oxidation is determined quantitatively. The anisotropies in the dn/dT values are mainly caused by the thermal stress and are independent of oxidation. However, the original (stress-free) thermo-optic coefficients are obtained as isotropic and significantly different than the measured dn/dT values. Our findings have the potential to optimize the design of polarization insensitive and/or athermal BCB optical waveguide devices.

© 2010 OSA

OCIS Codes
(160.5470) Materials : Polymers
(310.6860) Thin films : Thin films, optical properties
(130.5460) Integrated optics : Polymer waveguides

ToC Category:
Thin Films

Original Manuscript: March 10, 2010
Revised Manuscript: April 5, 2010
Manuscript Accepted: April 5, 2010
Published: April 13, 2010

Md. Faruque Hossain, Hau Ping Chan, and Mohammad Afsar Uddin, "Study of optical anisotropies in benzocyclobutene thin films for the efficient design of optical waveguide devices," Opt. Express 18, 8896-8905 (2010)

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