FROG characterisation of SOA-based wavelength conversion using XPM in conjunction with shifted filtering up to line rates of 80 GHz
Clarke, Aisling M. and Girault, G. and Anandarajah, Prince M. and Guignard, Celine and Bramerie, Laurent and Barry, Liam P. and Simon, Jean Claude and Harvey, John D. (2006) FROG characterisation of SOA-based wavelength conversion using XPM in conjunction with shifted filtering up to line rates of 80 GHz. In: LEOS 2006 - The 19th Annual Meeting of the IEEE Lasers and Electro-Optics Society, Oct 2006, Montreal, Canada.
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The work we present here builds on recent work where we obtained 80 Gb/s error free performance using cross phase modulation (XPM) in an SOA in conjunction with a blue shifted bandpass filter. Here we present a detailed characterisation of this wavelength conversion scheme using a Frequency Resolved Optical Gating (FROG) measurement scheme for both red and blue shifted filtering. This type of characterisation has not been provided before to the best of our knowledge and is an important analysis firstly to achieve a full understanding of the gain and phase dynamics exploited by the wavelength conversion scheme presented and secondly to design a filter so that an optimum performance can be obtained
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