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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 19 — Oct. 1, 2010
  • pp: 3228–3230

Low-loss chalcogenide waveguides on lithium niobate for the mid-infrared

Xin Xia, Qi Chen, Candice Tsay, Craig B. Arnold, and Christi K. Madsen  »View Author Affiliations


Optics Letters, Vol. 35, Issue 19, pp. 3228-3230 (2010)
http://dx.doi.org/10.1364/OL.35.003228


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Abstract

We demonstrate low-loss chalcogenide ( As 2 S 3 ) waveguides on a LiNbO 3 substrate for the mid-IR wavelength ( 4.8 μm ). Designed for single-mode propagation, they are fabricated through photolithography and dry-etching technology and characterized on a mid-IR measurement setup with a quantum cascade laser. For straight waveguides, propagation loss as low as 0.33 dB / cm is measured and low-loss bends on the order of 100 μm are simulated, with measurement results showing < 3 dB for a 250 μm bend radius. The coupling efficiency is estimated to be 81%. In addition, the influences of variations in width and bend radius are also investigated.

© 2010 Optical Society of America

OCIS Codes
(130.3060) Integrated optics : Infrared
(130.3730) Integrated optics : Lithium niobate
(230.7380) Optical devices : Waveguides, channeled

ToC Category:
Integrated Optics

History
Original Manuscript: June 8, 2010
Revised Manuscript: August 19, 2010
Manuscript Accepted: August 19, 2010
Published: September 23, 2010

Citation
Xin Xia, Qi Chen, Candice Tsay, Craig B. Arnold, and Christi K. Madsen, "Low-loss chalcogenide waveguides on lithium niobate for the mid-infrared," Opt. Lett. 35, 3228-3230 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-19-3228


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