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Terahertz-bandwidth high-order temporal differentiators based on phase-shifted long-period fiber gratings

Terahertz-bandwidth high-order temporal differentiators based on phase-shifted long-period fiber gratings
Terahertz-bandwidth high-order temporal differentiators based on phase-shifted long-period fiber gratings
We report the fabrication of a pi -phase-shifted long-period fiber grating (LPFG) capable of operating as a terahertz-bandwidth second-order temporal differentiator. We demonstrate its operation experimentally by differentiating subpicosecond long optical pulses. A new scheme for achieving high-order photonic temporal differentiation based on LPFG filters is also proposed and demonstrated. In particular, we prepared a LPFG based first-order differentiator that was frequency and bandwidth matched to the second-order device and demonstrated the cascadability of these devices leading to the implementation of a third-order differentiator. By also employing these devices in reflection, up to the fifth-order differentiation is demonstrated experimentally.
0146-9592
3116-3119
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Park, Yongwoo
22a5995a-96a1-4fa8-b4c9-330529448a6a
Kulishov, Mykola
8195a009-0031-4252-a375-0963b33849a1
Azaña, Jose
a35611b7-132b-47b3-908b-62d486414114
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Park, Yongwoo
22a5995a-96a1-4fa8-b4c9-330529448a6a
Kulishov, Mykola
8195a009-0031-4252-a375-0963b33849a1
Azaña, Jose
a35611b7-132b-47b3-908b-62d486414114

Slavík, Radan, Park, Yongwoo, Kulishov, Mykola and Azaña, Jose (2009) Terahertz-bandwidth high-order temporal differentiators based on phase-shifted long-period fiber gratings. Optics Letters, 34 (20), 3116-3119. (doi:10.1364/OL.34.003116).

Record type: Article

Abstract

We report the fabrication of a pi -phase-shifted long-period fiber grating (LPFG) capable of operating as a terahertz-bandwidth second-order temporal differentiator. We demonstrate its operation experimentally by differentiating subpicosecond long optical pulses. A new scheme for achieving high-order photonic temporal differentiation based on LPFG filters is also proposed and demonstrated. In particular, we prepared a LPFG based first-order differentiator that was frequency and bandwidth matched to the second-order device and demonstrated the cascadability of these devices leading to the implementation of a third-order differentiator. By also employing these devices in reflection, up to the fifth-order differentiation is demonstrated experimentally.

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Published date: 15 October 2009

Identifiers

Local EPrints ID: 78909
URI: https://eprints.soton.ac.uk/id/eprint/78909
ISSN: 0146-9592
PURE UUID: eacb44df-9239-464a-a6c4-f1897f062445
ORCID for Radan Slavík: ORCID iD orcid.org/0000-0002-9336-4262

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Date deposited: 16 Mar 2010
Last modified: 06 Dec 2019 01:34

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Contributors

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

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