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Proceedings Paper

Time evolution of an electro-optic modulator by detection of its nonlinear behavior
Author(s): Dang Thanh Bui; Lam Duy Nguyen; Isabelle Ledoux-Rak; Bernard Journet
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Paper Abstract

The stability of an electro-optic modulator has been significantly improved by implementing an original temperature control system. In particular, the evolution of the modulator characteristics can be followed through its nonlinear behavior by detecting the second harmonic of a low-frequency modulation signal; the evolution can be investigated with a higher accuracy by measuring also the phase-shift of this harmonic signal. Two digital boards have been developed with PSOC microcontrollers. The first one is associated with a small power amplifier for the temperature control; the second board is used to analyze the behavior of the electro-optic modulator. By thermal control of the modulator it is possible to reduce significantly the drift of its optical bias point.

Paper Details

Date Published: 25 February 2010
PDF: 7 pages
Proc. SPIE 7598, Optical Components and Materials VII, 75980R (25 February 2010); doi: 10.1117/12.842054
Show Author Affiliations
Dang Thanh Bui, SATIE, CNRS, École Normale Supérieure de Cachan (France)
Lam Duy Nguyen, SATIE, CNRS, École Normale Supérieure de Cachan (France)
Isabelle Ledoux-Rak, LPQM, CNRS, École Normale Supérieure de Cachan (France)
Bernard Journet, SATIE, CNRS, École Normale Supérieure de Cachan (France)

Published in SPIE Proceedings Vol. 7598:
Optical Components and Materials VII
Shibin Jiang; Michel J. F. Digonnet; John W. Glesener; J. Christopher Dries, Editor(s)

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