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40 GHz electro-optic polarization modulator for fiber optic communications systems.

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Title: 40 GHz electro-optic polarization modulator for fiber optic communications systems.
Author: Bull, Jeffrey D.; Jaeger, Nicolas A. F.; Kato, Hiroshi; Fairburn, Mark; Reid, Adam; Ghanipour, Pejman
Issue Date: 2004
Publicly Available in cIRcle 2011-06-07
Publisher Society of Photo-Optical Instrumentation Engineers
Citation: Bull, Jeffrey D.; Jaeger, Nicolas A. F.; Kato, Hiroshi; Fairburn, Mark; Reid, Adam; Ghanipour, Pejman. 40 GHz electro-optic polarization modulator for fiber optic communications systems. Photonics North 2004: Optical Components and Devices, edited by John C. Armitage, Simon Fafard, Roger A. Lessard, George A. Lampropoulos, Proceedings of SPIE Volume 5577, 133, 2004. http://dx.doi.org/10.1117/12.567640
Abstract: A novel ultrahigh-speed electro-optic polarization modulator is introduced. The modulator uses a mode converter and a static polarization controller to change the output polarization state in a circular path, following a great circle, around the Poincar sphere. Any two states on the Poincar sphere can be connected. The mode converter is constructed using an AlGaAs ridge waveguide combined with slow-wave travelling wave electrodes. The travelling wave electrodes are designed to match the velocity of the electrical modulating signal, the data signal, to the optical carrier signal over a broad frequency range. This modulator demonstrates a 3 dB bandwidth in excess of 40 GHz. The polarization modulator exhibits extremely low differential group delay, on the order of a few 10s of femto-seconds, and low drive voltage, on the order of 5 V. Copyright 2004 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Affiliation: Electrical and Computer Engineering, Dept of
URI: http://hdl.handle.net/2429/35186
Peer Review Status: Reviewed
Scholarly Level: Faculty

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