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Proceedings Paper

Novel guided-wave thermo-optic beam deflector
Author(s): Bulang Li; Suning Tang; Xinghua Han; Jeffery J. Maki; Chiou-Hung Jang; Dechang An; Jin-ha Kim; Lin Sun; John Toboada; Ray T. Chen
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Paper Abstract

A novel approach for laser beam deflection using the thermal optic prism array in a polymeric planar waveguide is developed. This approach is based on the different thermo- optic properties between polymer and silica, the two optical materials employed for the guided wave beam deflector. A waveguide structure with the core layer composed of inversely positioned polymer and silica triangles forming a polymer/silica prism array has been fabricated. Through electrical heating, a temperature change results in an index difference between the two optical materials and creates an optical prism structure in the polymer/silica planar waveguide. A beam deflection of 5.4 degree was observed under a temperature change of 60 degrees C in the fabricated prism array. The sensitivity of the device is 0.09 degrees/degrees C. A maximal number of resolvable spots of 8 was achieved at a low driving power from the thermo-optic prism array structure. The accuracy of beam deflection approaches 16 micro-radian. The device fabricated has a thickness of 5 microns, a prism aperture width of 600 microns, and a device length of 7 mm. Optimal design to maximize the deflection angle and the number of resolvable spots has been evaluated.

Paper Details

Date Published: 27 April 2000
PDF: 8 pages
Proc. SPIE 3952, Optoelectronic Interconnects VII; Photonics Packaging and Integration II, (27 April 2000); doi: 10.1117/12.384411
Show Author Affiliations
Bulang Li, Radiant Research, Inc. (United States)
Suning Tang, Radiant Research, Inc. (United States)
Xinghua Han, Radiant Research, Inc. (United States)
Jeffery J. Maki, Radiant Research, Inc. (United States)
Chiou-Hung Jang, Univ. of Texas/Austin (United States)
Dechang An, Univ. of Texas/Austin (United States)
Jin-ha Kim, Univ. of Texas/Austin (United States)
Lin Sun, Univ. of Texas/Austin (United States)
John Toboada, Univ. of Texas/Austin (United States)
Ray T. Chen, Univ. of Texas/Austin (United States)

Published in SPIE Proceedings Vol. 3952:
Optoelectronic Interconnects VII; Photonics Packaging and Integration II
Michael R. Feldman; Richard Liqiang Li; Michael R. Feldman; Richard Liqiang Li; W. Brian Matkin; Suning Tang, Editor(s)

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