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Journal of Nanophotonics

Metal-oxide semiconductor, field effect transistor-based microscale electro-optical multimode interference modulator on a silicon chip
Author(s): Ofer Limon; Zeev Zalevsky; Luca Businaro
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Paper Abstract

A new approach allows the realization of an electro-optical modulator or a transistor that is integrated on a silicon chip. The operation principle includes the realization of optical multimode interference (MMI) as the operation core of an electro-optical metal-oxide-semiconductor (MOS) field effect transistor (FET). Externally applied voltage generates a depletion region as well as layer of inversion which is full with free carriers. The free carriers vary the relative phase shift as well as the attenuation of one arm of the interferometer due to the plasma dispersion effect in silicon. This variation allows breaking the balance of the mode conversion and results with amplitude modulation in the output of the MMI region. The device does not have high finesse resonance and yet its overall length is only about 18 μm.

Paper Details

Date Published: 1 November 2007
PDF: 9 pages
J. Nanophoton. 1(1) 011660 doi: 10.1117/1.2821814
Published in: Journal of Nanophotonics Volume 1, Issue 1
Show Author Affiliations
Ofer Limon, Bar-Ilan Univ. (Israel)
Zeev Zalevsky, Bar-Ilan Univ. (Israel)
Luca Businaro, Lab. Nazionale TASC/INFM (Italy)

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