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Applied Optics

Applied Optics


  • Vol. 38, Iss. 3 — Jan. 20, 1999
  • pp: 530–533

Integrated optical polarization splitter based on photobleaching-induced birefringence in azo dye polymers

Sang-Shin Lee, Sean Garner, William H. Steier, and Sang-Yung Shin  »View Author Affiliations

Applied Optics, Vol. 38, Issue 3, pp. 530-533 (1999)

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An integrated optical polarization splitter has been fabricated by utilizing the photobleaching-induced birefringence in an azo dye polymer. It consists of a Y-branch waveguide formed by the reactive ion etching with one of the two arms photobleached. The refractive index of the photobleached arm is decreased for the TE mode and increased for the TM mode. The performance of the splitter was measured as a function of the energy of the photobleaching beam and compared to a wave propagation simulation of the device. The measured cross talks are less than -28 dB for the TM mode and -24 dB for the TE mode at a wavelength of 1310 nm. The measured excess losses for the TE and TM modes, which measure the effect of the Y branch and the photobleaching, are 0.3 and 0.4 dB, respectively. The insertion loss was 5 dB, which includes the input fiber to waveguide coupling loss.

© 1999 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(130.1750) Integrated optics : Components
(130.3120) Integrated optics : Integrated optics devices
(130.3130) Integrated optics : Integrated optics materials

Original Manuscript: June 30, 1998
Revised Manuscript: November 3, 1998
Published: January 20, 1999

Sang-Shin Lee, Sean Garner, William H. Steier, and Sang-Yung Shin, "Integrated optical polarization splitter based on photobleaching-induced birefringence in azo dye polymers," Appl. Opt. 38, 530-533 (1999)

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