Wavelength tuneable pulse monitoring using a Two-Photon-Absorption microcavity
Bondarczuk, Krzysztof and Maguire, Paul J. and Barry, Liam P. and O'Dowd, John and Guo, Wei Hua and Lynch, Michael and Bradley, Ann Louise and Donegan, John Francis (2007) Wavelength tuneable pulse monitoring using a Two-Photon-Absorption microcavity. In: CLEOE-IQEC 2007 - European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference, 17-22 June 2007, Munich, Germany.
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Two Photon Absorption (TPA) is a non-linear optical-to-electrical conversion process that can be significantly enhanced by placing the active region within a resonance microcavity. The experiment confirmed the potential use of the microcavity structure for monitoring a single channel in multi-wavelength systems. The cavity can be designed for different applications depending on desired resonance width or cavity life time allowing the contrast ratio to be further improved. Due to the possibility of tuning the resonance wavelength by cavity tilting, a single device can be used to monitor a number of WDM channels without the need for additional optical filters.
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