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Proceedings Paper

40-GHz electro-optic polarization modulator for fiber optic communications systems
Author(s): Jeffrey D. Bull; Nicolas A.F. Jaeger; Hiroshi Kato; Mark Fairburn; Adam Reid; Pejman Ghanipour
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Paper 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 Poincaré sphere. Any two states on the Poincaré 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.

Paper Details

Date Published: 20 December 2004
PDF: 11 pages
Proc. SPIE 5577, Photonics North 2004: Optical Components and Devices, (20 December 2004); doi: 10.1117/12.567640
Show Author Affiliations
Jeffrey D. Bull, JGKB Photonics Inc. (Canada)
Nicolas A.F. Jaeger, Univ. of British Columbia (Canada)
Hiroshi Kato, JGKB Photonics Inc. (Canada)
Mark Fairburn, JGKB Photonics Inc. (Canada)
Adam Reid, JGKB Photonics Inc. (Canada)
Pejman Ghanipour, Univ. of British Columbia (Canada)

Published in SPIE Proceedings Vol. 5577:
Photonics North 2004: Optical Components and Devices
John C. Armitage; Simon Fafard; Roger A. Lessard; George A. Lampropoulos, Editor(s)

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