In-fiber subpicosecond pulse shaping for nonlinear optical telecommunication data processing at 640Gbit/s

0436574 - ÚFE 2015 US eng J - Journal Article
Azana, J. - Oxenlowe, L. K. - Palushani, E. - Slavík, Radan - Galili, M. - Mulvad, H. C. H. - Hu, H. - Park, Y. - Clausen, A. T. - Jeppesen, P.
In-fiber subpicosecond pulse shaping for nonlinear optical telecommunication data processing at 640Gbit/s.
International Journal of Optics. Roč. 2012, - (2012), s. 895281. ISSN 1687-9384. E-ISSN 1687-9392
Institutional research plan: CEZ:AV0Z20670512
Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering

We review recent work on all-fiber (long-period fiber grating) devices for optical pulse shaping, particularly flat-top pulse generation, down to the subpicosecond range and their application for nonlinear switching (demultiplexing) of optical time-division multiplexed (OTDM) data signals in fiber-optic telecommunication links operating up to 640 Gbit/s. Experiments are presented demonstrating error-free 640-to-10 Gbit/s demultiplexing of the 64 tributary channels using the generated flat-top pulses for temporal gating in a Kerr-effect-based nonlinear optical loop mirror. The use of flat-top pulses has critical benefits in the demultiplexing process, including a significantly increased timing-jitter tolerance (up to ~500 fs, i.e., 30% of the bit period) and the associated improvement in the bit-error-rate performance (e.g., with a sensitivity increase of up to ~13 dB as compared with the use of Gaussian-like gating pulses). Long-period fiber grating pulse shapers with reduced polarization dependence are fabricated and successfully used for polarization-independent 640-to-10 Gbit/s demultiplexing experiments
Permanent Link: http://hdl.handle.net/11104/0240294