N-bit optically controlled microwave signal attenuator using the photoconductive effect

Nabeel A. Riza; Stephen E. Saddow

doi:10.1117/12.218527

1 October 1995 N-bit optically controlled microwave signal attenuator using the photoconductive effect

Nabeel A. Riza, Stephen E. Saddow

Proceedings Volume 2560, Optical Technology for Microwave Applications VII; (1995) https://doi.org/10.1117/12.218527
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Various optical architectures for N-bit digital control of microwave signals are introduced that use the photoconductive (PC) effect in microwave waveguides for variable rf attenuation control. A 2-bit optically controlled microwave attenuator based on a silicon PC transmission line device is experimentally demonstrated at 990 Mhz. At 532 nm, this attenuator provided 0, 5.8, 11.2, and 15.6 of attenuation levels.

Citation Download Citation

Nabeel A. Riza and Stephen E. Saddow "N-bit optically controlled microwave signal attenuator using the photoconductive effect", Proc. SPIE 2560, Optical Technology for Microwave Applications VII, (1 October 1995); https://doi.org/10.1117/12.218527

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