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Electrically programmable all-fiber structured second order optical temporal differentiator
KTH, School of Information and Communication Technology (ICT). Huazhong University of Science and Technology, China.
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2015 (English)In: IEEE Photonics Journal, ISSN 1943-0655, Vol. 7, no 3, 7098342Article in journal (Refereed) Published
Abstract [en]

We propose and experimentally demonstrate an electrically programmable second order optical temporal differentiator (OTD) based on linearly chirped fiber Bragg grating (LCFBG) and digital thermal print head (TPH). For the high-speed optical signal with 25-GHz repetition rate, an efficient second-order OTD has been achieved for arbitrary wavelength and bandwidth with the software-defined TPH configurations. By optimizing the thermooptic effect induced optical phase change in the LCFBG, the central wavelength of the differentiator can be reconfigured flexibly from 1543.5 to 1561.7 nm, with a step size of 0.114 nm. By dynamically controlling the heating elements bonded with the LCFBG, optical pulses with 0.55- and 0.8-nm 3-dB bandwidths have been successfully processed with acceptable deviation compared with the theoretical calculations.

Place, publisher, year, edition, pages
2015. Vol. 7, no 3, 7098342
Keyword [en]
fiber gratings, pulse shaping, Ultrafast device
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-170234DOI: 10.1109/JPHOT.2015.2428245ISI: 000360358300035Scopus ID: 2-s2.0-84930504698OAI: oai:DiVA.org:kth-170234DiVA: diva2:827601
Note

QC 20150629

Available from: 2015-06-29 Created: 2015-06-29 Last updated: 2015-09-18Bibliographically approved

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  • apa
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