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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 19 — Sep. 15, 2008
  • pp: 15069–15073

Compact and low-loss bent hollow waveguides with distributed Bragg reflector

Hua-Kung Chiu, Fu-Li Hsiao, Chia-Hua Chan, and Chii-Chang Chen  »View Author Affiliations

Optics Express, Vol. 16, Issue 19, pp. 15069-15073 (2008)

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In this study, a hollow bent waveguide with distributed Bragg reflectors (DBR) in silicon substrate was presented theoretically and experimentally. We used the two-dimensional finite-difference time-domain method to simulate bending transmission efficiencies for arc- and cut-type 90°-bent waveguides. The air core was embedded by Si3N4/SiO2 multilayer. The multilayer stacks were deposited by using plasma-enhanced chemical vapor deposition on the top and bottom of air core. The lowest 90 degree bending loss is around 3.9dB for the arc-type bending waveguides and 0.8dB for cut-type bending waveguides, respectively. This waveguide demonstrates a possibility for higher density of integration in planar light wave circuits.

© 2008 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.7370) Optical devices : Waveguides

ToC Category:
Integrated Optics

Original Manuscript: June 23, 2008
Revised Manuscript: September 2, 2008
Manuscript Accepted: September 5, 2008
Published: September 11, 2008

Hua-Kung Chiu, Fu-Li Hsiao, Chia-Hua Chan, and Chii-Chang Chen, "Compact and low-loss bent hollow waveguides with distributed Bragg reflector," Opt. Express 16, 15069-15073 (2008)

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