High-order passive photonic temporal integrators

Institut National de la Recherche Scientifique-Energie, Matériaux et Télécommunications (INRS-EMT),Montréal, Québec, H5A 1K6 Canada.
Optics Letters (Impact Factor: 3.29). 04/2010; 35(8):1191-3. DOI: 10.1364/OL.35.001191
Source: PubMed


We experimentally demonstrate, for the first time to our knowledge, an ultrafast photonic high-order (second-order) complex-field temporal integrator. The demonstrated device uses a single apodized uniform-period fiber Bragg grating (FBG), and it is based on a general FBG design approach for implementing optimized arbitrary-order photonic passive temporal integrators. Using this same design approach, we also fabricate and test a first-order passive temporal integrator offering an energetic-efficiency improvement of more than 1 order of magnitude as compared with previously reported passive first-order temporal integrators. Accurate and efficient first- and second-order temporal integrations of ultrafast complex-field optical signals (with temporal features as fast as approximately 2.5ps) are successfully demonstrated using the fabricated FBG devices.


Available from: Chao Wang
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    • "Compared with a pure electronic temporal operator, a photonic temporal operator implemented in the optical domain would provide a much higher speed and wider bandwidth [1]. A few fundamental photonic signal processing operators and transformers, such as photonic temporal differentiators [2]–[10], integrators [11], [12] and Hilbert transformers [13]–[15], have been theoretically designed or practically realized. Manuscript received March 06, 2011; revised June 05, 2011, June 08, 2011; accepted June 08, 2011. "
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