Isolator-free switchable uni- and bidirectional hybrid mode-locked erbium-doped fiber laser


An Erbium-doped fibre ring laser hybrid mode-locked with single-wall carbon nanotubes (SWNT) and nonlinear polarisation evolution (NPE) without an optical isolator has been investigated for various cavity conditions. Precise control of the state of polarisation (SOP) in the cavity ensures different losses for counter-propagating optical fields. As the result, the laser operates in quasi-unidirectional regime in both clockwise (CW) and counter-clockwise (CCW) directions with the emission strengths difference of the directions of 22 dB. Furthermore, by adjusting the net birefringence in the cavity, the laser can operate in a bidirectional generation. In this case, a laser pumped with 75 mW power at 980 nm generates almost identical 790 and 570 fs soliton pulses with an average power of 1.17 and 1.11 mW. The operation stability and pulse quality of the soliton pulses in both unidirectional regimes are highly competitive with those generated in conventional ring fibre lasers with isolator in the cavity. Demonstrated bidirectional laser operation can find vital applications in gyroscopes or precision rotation sensing technologies.

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Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences > School of Computer Science and Digital Technologies
Additional Information: © 2016 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited. Funding: Marie-Curie Inter-national Research Staff Exchange Scheme “TelaSens" project, Research Executive Agency Grant No 269271, Programme: FP7-PEOPLE-2010-IRSES and the European Research Council through the FP7-IDEAS-ERC grant ULTRALASER is gratefully acknowledged. M. C. acknowledges the support of EU Horizon2020 Marie S.-Curie IF MINDFLY project.
Uncontrolled Keywords: Atomic and Molecular Physics, and Optics
Publication ISSN: 1094-4087
Last Modified: 17 Jun 2024 07:21
Date Deposited: 18 Aug 2016 13:20
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2016-07-11
Published Online Date: 2016-07-01
Accepted Date: 2016-06-06
Submitted Date: 2016-03-11
Authors: Chernysheva, Maria
Al Araimi, Mohammed
Kbashi, Hani (ORCID Profile 0000-0002-6343-248X)
Arif, Raz
Sergeyev, Sergey V. (ORCID Profile 0000-0002-1515-5019)
Rozhin, Aleksey (ORCID Profile 0000-0003-2271-8227)



Version: Accepted Version

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