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New description of transmission of an SOA-based sagnac loop and its application for NRZ wavelength conversion

Glesk, I. and Xu, Lei and Baby, Varghese and Prucnal, Paul R. (2005) New description of transmission of an SOA-based sagnac loop and its application for NRZ wavelength conversion. Optics Communications, 244 (1-6). pp. 199-208. ISSN 0030-4018

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Abstract

Sagnac interferometric loops with a semiconductor optical amplifiers (SOA) have found important applications for optical signal processing and communication networks. We derive a new description of the transmission of an SOA-based Sagnac loop by including the influence of loop birefringence. Based on this new description, we theoretically analyze and experimentally demonstrate NRZ wavelength conversion using a Sagnac loop with an SOA at asymmetric position. We also show that the converted signal with an SOA-based Sagnac loop has lower pattern dependent effect and smaller power penalty compared with the converted signal using cross gain modulation effect