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Opt Express. 2008 Oct 13;16(21):16766-73.

A microelectromechanically tunable asymmetric Fabry-Perot quantum well modulator at 1.55 microm.

Author information

1
1Naval Research Laboratory, Washington, DC 20375, USA. stievater@nrl.navy.mil

Abstract

Placing a quantum well modulator in an asymmetric Fabry- Perot cavity enables significantly higher contrast ratios than are possible in a conventional surface-normal quantum well modulator. However, fixed-cavity asymmetric Fabry-Perot quantum well modulators require extremely precise and uniform crystal growth and are sensitive to small fluctuations in temperature or angle of incidence. Here, we experimentally demonstrate an InP-based microelectromechanically tunable asymmetric Fabry-Perot quantum well modulator that operates in the optical C-band. By actuating a suspended InGaAlAs reflector, the cavity mode can be perfectly matched to the appropriate quantum well absorption wavelength. The devices exhibit contrast ratios over 30 (15 dB) at 8 volts quantum well bias and modulation speeds of 1 MHz.

PMID:
18852786
[Indexed for MEDLINE]

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