13 July 1978 Development Of An Integrated-Optics Multichannel Data Processor
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Proceedings Volume 0139, Guided Wave Optical Systems and Devices I; (1978) https://doi.org/10.1117/12.956258
Event: 1978 Technical Symposium East, 1978, Washington, D.C., United States
Abstract
An integrated optical system for comparing one set of voltage signals to a reference set will be described. The processor utilizes a hologram written in an outdiffused LiNb03 waveguide to effectively subtract the input signal voltage set from one or many reference sets as a means of pattern recognition. Parallel processing in a one-dimensional format should make possible comparison rates of 100 MHz for data sets containing as many as 100 information channels. The envisioned system contains the following components: A end-fired laser, a metallized-photoresist grating beam splitter and two polished-edge mirrors to form an integrated interferometer, a waveguide hologram in the area of beam recombination, and a lens to project the processed beam onto a butt-coupled detector. In the reference arm of the interferometer, a simple electrode pair is utilized to generate the phase shift required for holographic subtraction, while in the signal arm, a more complicated N-channel electrode structure is employed to electrooptically convert voltage information to spatial phase information on the guided wave. Efforts to build and characterize a three-channel system with integrated beam splitter, mirror, electrodes, and hologram are presented.
© (1978) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
D. W. Vahey, D. W. Vahey, C. M. Verber, C. M. Verber, R. P. Kenan, R. P. Kenan, } "Development Of An Integrated-Optics Multichannel Data Processor", Proc. SPIE 0139, Guided Wave Optical Systems and Devices I, (13 July 1978); doi: 10.1117/12.956258; https://doi.org/10.1117/12.956258
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