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All-optical switching by counterpropagating operation in cascaded semiconductor optical amplifiers

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4 Author(s)
Jong-Hoi Kim ; Dept. of Phys., Sogang Univ., Seoul, South Korea ; Kwang-Ryong Oh ; Hyun-Soo Kim ; Cho, Kyuman

We propose a simple, compact, integrative, flexible, power-efficient, and all-optical switch. The operation is based on self-induced gain modulation leading to nonlinear transmittance with a threshold level dependent on input powers of the data and control signals counterpropagating in cascaded semiconductor optical amplifiers. We demonstrate numerically the all-optical switch with small-signal modulation, low-power consumption, high-output power, and high-output extinction ratio.

Published in:

Photonics Technology Letters, IEEE  (Volume:12 ,  Issue: 5 )

Date of Publication:

May 2000

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