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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 20 — Jul. 10, 2007
  • pp: 4357–4370

Thermo-optical modeling of an intrinsically heated polymer fiber Bragg grating

Kyoung Joon Kim, Avram Bar-Cohen, and Bongtae Han  »View Author Affiliations


Applied Optics, Vol. 46, Issue 20, pp. 4357-4370 (2007)
http://dx.doi.org/10.1364/AO.46.004357


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Abstract

A fully concatenated thermo-optical model is presented to predict the thermo-optical behavior of an intrinsically heated polymer fiber Bragg grating (PFBG). Coupled-mode theory and heat-conduction theory are first used to determine the axial heat generation and temperature distribution of a PFBG and the transfer matrix method (TMM) is subsequently employed to predict its thermo-optical behavior. The validity of the TMM is corroborated experimentally using an externally heated glass fiber Bragg grating (FBG) with an axially decaying temperature field. The verified model is utilized to investigate the thermo-optical behavior of a poly(methyl methacrylate) (PMMA) FBG. The counteracting thermally driven changes in the refractive index and the grating pitch, respectively, are found to be of comparable magnitude and to result in very modest net shifts in the Bragg wavelengths despite the considerable temperature changes induced by the absorption of the incident light.

© 2007 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2340) Fiber optics and optical communications : Fiber optics components
(250.5460) Optoelectronics : Polymer waveguides

ToC Category:
Diffraction and Gratings

History
Original Manuscript: September 6, 2006
Revised Manuscript: February 4, 2007
Manuscript Accepted: February 13, 2007
Published: June 20, 2007

Citation
Kyoung Joon Kim, Avram Bar-Cohen, and Bongtae Han, "Thermo-optical modeling of an intrinsically heated polymer fiber Bragg grating," Appl. Opt. 46, 4357-4370 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-20-4357

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