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Long-period fiber-grating-based filter for generation of picosecond and subpicosecond transform-limited flat-top pulses

Long-period fiber-grating-based filter for generation of picosecond and subpicosecond transform-limited flat-top pulses
Long-period fiber-grating-based filter for generation of picosecond and subpicosecond transform-limited flat-top pulses

We suggest and demonstrate an all-fiber pulse shaper for synthesizing transform-limited flat-top waveforms. The proposed scheme can be easily scaled down to the (sub-)picosecond regime while offering low polarization dependence and extremely low insertion loss. It is based on a cascade of two long-period fiber gratings. As a proof-of-concept experiment, we report the generation of transform-limited flat-top pulses with full-width at half-maximum duration of 2 ps, which is over two times faster than the shortest transform-limited flat-top pulse ever generated with an all-fiber filter.

Gratings, Optical fiber filters, Optical pulse shaping, Passive filters
1041-1135
806-808
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Park, Yongwoo
22a5995a-96a1-4fa8-b4c9-330529448a6a
Azaña, Jose
412da1ed-3b3e-4580-89fb-73d05a91f044
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Park, Yongwoo
22a5995a-96a1-4fa8-b4c9-330529448a6a
Azaña, Jose
412da1ed-3b3e-4580-89fb-73d05a91f044

Slavík, Radan, Park, Yongwoo and Azaña, Jose (2008) Long-period fiber-grating-based filter for generation of picosecond and subpicosecond transform-limited flat-top pulses. IEEE Photonics Technology Letters, 20 (10), 806-808. (doi:10.1109/LPT.2008.921131).

Record type: Article

Abstract

We suggest and demonstrate an all-fiber pulse shaper for synthesizing transform-limited flat-top waveforms. The proposed scheme can be easily scaled down to the (sub-)picosecond regime while offering low polarization dependence and extremely low insertion loss. It is based on a cascade of two long-period fiber gratings. As a proof-of-concept experiment, we report the generation of transform-limited flat-top pulses with full-width at half-maximum duration of 2 ps, which is over two times faster than the shortest transform-limited flat-top pulse ever generated with an all-fiber filter.

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More information

Published date: 15 May 2008
Additional Information: This work was supported by the Grant Agency of AS CR under Contract KJB200670601 and by the Czech Science Foundation under Contract 102/07/0999. R. Slavík is with the Institute of Photonics and Electronics, AS CR, 182 51 Prague, Czech Republic (e-mail: slavik@ufe.cz). Y. Park and J. Azaña are with the Institut National de la Recherche Scien-tifique (INRS), Montréal, Québec H5A 1K6, Canada (e-mail: azana@emt.inrs. ca). Color versions of one or more of the figures in this letter are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/LPT.2008.921131 Fig. 1. Schematics of the LPFG-based common path interferometer for flat-top pulse shaping. The light is split by the first LPFG, then propagates in the core and cladding modes with different speeds and is superimposed coherently using the second LPFG.
Keywords: Gratings, Optical fiber filters, Optical pulse shaping, Passive filters

Identifiers

Local EPrints ID: 456661
URI: http://eprints.soton.ac.uk/id/eprint/456661
ISSN: 1041-1135
PURE UUID: c07db3f6-7412-46ca-aa2c-d8ccdf9c3178
ORCID for Radan Slavík: ORCID iD orcid.org/0000-0002-9336-4262

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Date deposited: 05 May 2022 17:01
Last modified: 06 May 2022 01:41

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Contributors

Author: Radan Slavík ORCID iD
Author: Yongwoo Park
Author: Jose Azaña

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