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Proceedings Paper

Low-voltage electro-optic polymer modulators
Author(s): Raluca Dinu; Danliang Jin; Diyun Huang; Mary K. Koenig; Anna M. Barklund; Yun Fang; Timothy C. Parker; Zhengwei Shi; Jingdong Luo; Alex K-Y. Jen
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Paper Abstract

Electro-optic (EO) polymer modulators have demonstrated high speed external modulation of optical signals. Additionally, EO polymers have closely matched refractive indices at optical and microwave wavelengths, which enables high bandwidth operation. An EO polymer includes a polymer matrix and an organic "push-pull" chromophore that can be modified to give poled polymers with high EO activity. This high EO activity and optical-microwave velocity match offer the promise of accomplishing broadband, high speed optical modulation with low drive voltage. Such optical signal modulation is critical for applications in phased array radar and RF photonics. However, practical fabrication of optical modulators that realize the potential of EO polymers requires clad materials with optimized properties such as conductivity, dielectric constant, optical loss, and refractive index. In addition, other practical issues such as electrode design, optical fiber coupling, and hermetic packaging are critical in final device performance. We report on high-speed electrode parameters as well as electro-optic performance versus frequency of modulators fabricated on 6" silicon wafers. The r33 values measured on single layer thin films are compared with those resulting from Vπ measurements on devices. We compare the effect of EO polymer morphology on device fabrication and optical loss for different EO polymers.

Paper Details

Date Published: 12 May 2006
PDF: 8 pages
Proc. SPIE 6243, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications II, 62430G (12 May 2006); doi: 10.1117/12.666348
Show Author Affiliations
Raluca Dinu, Lumera Corp. (United States)
Danliang Jin, Lumera Corp. (United States)
Diyun Huang, Lumera Corp. (United States)
Mary K. Koenig, Lumera Corp. (United States)
Anna M. Barklund, Lumera Corp. (United States)
Yun Fang, Lumera Corp. (United States)
Timothy C. Parker, Lumera Corp. (United States)
Zhengwei Shi, Univ. of Washington (United States)
Jingdong Luo, Univ. of Washington (United States)
Alex K-Y. Jen, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 6243:
Enabling Photonics Technologies for Defense, Security, and Aerospace Applications II
Michael J. Hayduk; Andrew R. Pirich; Eric J. Donkor; Peter J. Delfyett Jr., Editor(s)

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