Novel guided-wave thermo-optic beam deflector

Bulang Li; Suning Tang; Xinghua Han; Jeffery J. Maki; Chiou-Hung Jang; Dechang An; Jin-ha Kim; Lin Sun; John Toboada; Ray T. Chen

doi:10.1117/12.384411

27 April 2000 Novel guided-wave thermo-optic beam deflector

Bulang Li, Suning Tang, Xinghua Han, Jeffery J. Maki, Chiou-Hung Jang, Dechang An, Jin-ha Kim, Lin Sun, John Toboada, Ray T. Chen

Author Affiliations +

Proceedings Volume 3952, Optoelectronic Interconnects VII; Photonics Packaging and Integration II; (2000) https://doi.org/10.1117/12.384411
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

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.

Citation Download Citation

Bulang Li, Suning Tang, Xinghua Han, Jeffery J. Maki, Chiou-Hung Jang, Dechang An, Jin-ha Kim, Lin Sun, John Toboada, and Ray T. Chen "Novel guided-wave thermo-optic beam deflector", Proc. SPIE 3952, Optoelectronic Interconnects VII; Photonics Packaging and Integration II, (27 April 2000); https://doi.org/10.1117/12.384411

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