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Proceedings Paper

Optical signal processing using a vertical-cavity surface-emitting laser with external optical injection
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Paper Abstract

A novel optical signal processing using an optically pumped vertical-cavity surface-emitting laser (VCSEL) with an external optical input is proposed. The mode transition between a fundamental and a high-order transverse mode is induced by an external optical injection. When we select a fundamental transverse mode through a single-mode fiber as an output signal, we are able to realize non-linear transfer functions, which may be useful for re-amplification and re-shaping in high speed photonic networks. The switching characteristic of a 1.55 μm optically pumped two-mode VCSEL has been simulated by using a two-mode rate equation, including the effects of spatial hole burning and spectral hole burning as gain saturation coefficients. Also, the detuning effect in the injection locking is investigated. When the wavelength of an input light with a fundamental mode is slightly longer than that of a VCSEL operating in a 1st-order transverse mode, the transverse mode of the VCSEL is switched to a fundamental mode at a critical input power level. This gives us an ideal 2R function with amplification and nonlinear transfer functions.

Paper Details

Date Published: 25 July 2003
PDF: 9 pages
Proc. SPIE 4986, Physics and Simulation of Optoelectronic Devices XI, (25 July 2003); doi: 10.1117/12.482557
Show Author Affiliations
Yutaka Onishi, Tokyo Institute of Technology (Japan)
Fumio Koyama, Tokyo Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 4986:
Physics and Simulation of Optoelectronic Devices XI
Marek Osinski; Hiroshi Amano; Peter Blood, Editor(s)

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