All-fiber saturable absorber based on nonlinear multimode interference with enhanced modulation depth
All-fiber saturable absorber based on nonlinear multimode interference with enhanced modulation depth
We experimentally demonstrate a passively mode-locked fiber ring laser using a small-core fiber-graded index multimode fiber-single-mode fiber (SCF-GIMMF-SMF) structure as an effective saturable absorber based on the nonlinear multimode interference (NL-MMI) effect. A small-core fiber is used as an input single-mode fiber to improve the coupling of power into higher-order modes in a multimode fiber and to enhance the modulation depth of the structure. Stable fundamental mode-locked operation is obtained at a pump threshold of 166mWand the output soliton pulses have a 647 fs duration at 1557.96 nm with a 5.2 nm spectral width at a repetition rate of 19.37 MHz. This NL-MMI SA can be applied to high-power mode-locked fiber lasers owing to its inherent high damage threshold, compact size, wavelength independent operation, and fabrication simplicity.
9007-9011
Wang, Teng
b2bf87c8-62eb-4c43-935d-b55f5a2a9ed2
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Zeng, Xianglong
13d3a25a-4d77-44c0-980a-6a7c575e5633
Richardson, David
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
4 October 2021
Wang, Teng
b2bf87c8-62eb-4c43-935d-b55f5a2a9ed2
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Zeng, Xianglong
13d3a25a-4d77-44c0-980a-6a7c575e5633
Richardson, David
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Wang, Teng, Jung, Yongmin, Horak, Peter, Zeng, Xianglong and Richardson, David
(2021)
All-fiber saturable absorber based on nonlinear multimode interference with enhanced modulation depth.
Applied Optics, 60 (29), .
(doi:10.1364/AO.432051).
Abstract
We experimentally demonstrate a passively mode-locked fiber ring laser using a small-core fiber-graded index multimode fiber-single-mode fiber (SCF-GIMMF-SMF) structure as an effective saturable absorber based on the nonlinear multimode interference (NL-MMI) effect. A small-core fiber is used as an input single-mode fiber to improve the coupling of power into higher-order modes in a multimode fiber and to enhance the modulation depth of the structure. Stable fundamental mode-locked operation is obtained at a pump threshold of 166mWand the output soliton pulses have a 647 fs duration at 1557.96 nm with a 5.2 nm spectral width at a repetition rate of 19.37 MHz. This NL-MMI SA can be applied to high-power mode-locked fiber lasers owing to its inherent high damage threshold, compact size, wavelength independent operation, and fabrication simplicity.
Text
AO-revised paper-V4
- Author's Original
Text
AO-2021-final version
- Accepted Manuscript
More information
Submitted date: 2021
Accepted/In Press date: 13 September 2021
Published date: 4 October 2021
Additional Information:
Funding Information:
Acknowledgment. Xianglong Zeng acknowledges the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning. Teng Wang thanks the China Scholarship Council (CSC) for financial support.
Funding Information:
Funding. Engineering and Physical Sciences Research Council (EP/N00762X/1, EP/P030181/1); National Natural Science Foundation of China (91750108); China Scholarship Council (201906890078).
Publisher Copyright:
© 2021 Optical Society of America.
Identifiers
Local EPrints ID: 451332
URI: http://eprints.soton.ac.uk/id/eprint/451332
ISSN: 1559-128X
PURE UUID: e9050de5-4ea9-4fc5-9907-9e2253db979e
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Date deposited: 21 Sep 2021 16:31
Last modified: 17 Mar 2024 06:49
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Author:
Teng Wang
Author:
Xianglong Zeng
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