All optical switching and continuum generation in silicon waveguides | Zendy

Ozdal Boyraz | Zendy; Prakash Koonath | Zendy; Varun Raghunathan | Zendy; Bahram Jalali | Zendy

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All optical switching and continuum generation in silicon waveguides

Author(s) -

Ozdal Boyraz,

Prakash Koonath,

Varun Raghunathan,

Bahram Jalali

Publication year - 2004

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.12.004094

Subject(s) - free carrier absorption , optics , interferometry , materials science , photonics , self phase modulation , kerr effect , silicon , silicon on insulator , laser , silicon photonics , free carrier , absorption (acoustics) , optoelectronics , nonlinear optics , physics , nonlinear system , quantum mechanics

First demonstration of cross phase modulation based interferometric switch is presented in silicon on insulator waveguides. By using Mach-Zehnder interferometric configuration we experimentally demonstrate switching of CW signal ~25 nm away from the pump laser. We present the effect of free carrier accumulation on switching. Additionally, we theoretically analyze the transient effects and degradations due to free carrier absorption, free carrier refraction and two photon absorption effects. Results suggest that at low peak power levels the system is governed by Kerr nonlinearities. As the input power levels increase the free carrier effects becomes dominant. Effect of free carrier generation on continuum generation and power transfer also theoretically analyzed and spectral broadening factor for high input power levels is estimated.

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