OTDM add-drop multiplexer based on time-frequency signal processing

Almeida, P.J., Petropoulos, P., Parmigiani, F., Ibsen, M. and Richardson, D.J. (2006) OTDM add-drop multiplexer based on time-frequency signal processing. Journal of Lightwave Technology, 24, (7), 2720-2732. (doi:10.1109/JLT.2006.875947).


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A time-division add-drop multiplexer capable of high-extinction-ratio operation is presented both theoretically and experimentally. The approach used is based on time-to-frequency domain conversion of optical signals and relies upon the switching of linearly chirped optical pulses. By converting a 40-Gb/s optical time-division multiplexing (OTDM) signal to 4 × 10-Gb/s wavelength-division multiplexing (WDM) channels and using fiber Bragg gratings for frequency-domain add-drop multiplexing, a timeslot suppression ratio in excess of 30 dB and error-free operation for the dropped, through, and added channels were achieved. A further stage of WDM-to-TDM signal conversion was used to map the resulting signal back into the time domain. Moreover, it is shown that it is straightforward to simultaneously operate on multiple channels by simply cascading gratings to make more complex filtering functions without the requirement for any further synchronization of the tributary channels.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1109/JLT.2006.875947
ISSNs: 0733-8724 (print)
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions : University Structure - Pre August 2011 > Optoelectronics Research Centre
ePrint ID: 42406
Accepted Date and Publication Date:
Date Deposited: 11 Dec 2006
Last Modified: 31 Mar 2016 12:15
URI: http://eprints.soton.ac.uk/id/eprint/42406

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