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Ultra-short wavelength operation of thulium doped fiber amplifiers and lasers

Ultra-short wavelength operation of thulium doped fiber amplifiers and lasers
Ultra-short wavelength operation of thulium doped fiber amplifiers and lasers
We fabricate and characterize a germanium/thulium (Ge/Tm) co-doped silica fiber in order to enhance the gain at the short wavelength edge of the thulium emission band (i.e. 1620-1660 nm). The Ge/Tm doped fiber shows an intrinsic blue-shifted absorption/emission cross-section compared to aluminum/thulium (Al/Tm) co-doped fiber, which greatly improves the short wavelength amplification and has enabled us to further extend the shortest wavelength of emission towards 1600 nm. Using this glass fiber composition, we have demonstrated both a silica-based thulium doped fiber amplifier (TDFA) in the 1628-1655 nm waveband and a tunable thulium-doped fiber laser (TDFL) capable of accessing the telecom U-band wavelength region. These results represent by far the shortest amplifier/laser wavelengths reported to-date from TDFAs/TDFLs.
Thulium fiber, amplifier
1094-4087
36699-36707
Chen, Shaoxiang
c7795b39-9ec3-4156-b3d7-73822fd31809
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Alam, Shaif-Ul
2b6bdbe5-ddcc-4a88-9057-299360b93435
Richardson, David
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Sidharthan, Raghuraman
7c0b228d-f8fa-4059-a36d-86a54f2bac5e
Ho, Daryl
7c24891a-418c-446f-b0e1-74b416fde08f
Yoo, Seongwoo
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Daniel, Jae M.O.
5ae7a93a-bcb9-4ee9-8c64-ea5babc6044a
Chen, Shaoxiang
c7795b39-9ec3-4156-b3d7-73822fd31809
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Alam, Shaif-Ul
2b6bdbe5-ddcc-4a88-9057-299360b93435
Richardson, David
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Sidharthan, Raghuraman
7c0b228d-f8fa-4059-a36d-86a54f2bac5e
Ho, Daryl
7c24891a-418c-446f-b0e1-74b416fde08f
Yoo, Seongwoo
c2f401c3-4073-45d0-8c97-27ef454a58a4
Daniel, Jae M.O.
5ae7a93a-bcb9-4ee9-8c64-ea5babc6044a

Chen, Shaoxiang, Jung, Yongmin, Alam, Shaif-Ul, Richardson, David, Sidharthan, Raghuraman, Ho, Daryl, Yoo, Seongwoo and Daniel, Jae M.O. (2019) Ultra-short wavelength operation of thulium doped fiber amplifiers and lasers. Optics Express, 27 (25), 36699-36707. (doi:10.1364/OE.27.036699).

Record type: Article

Abstract

We fabricate and characterize a germanium/thulium (Ge/Tm) co-doped silica fiber in order to enhance the gain at the short wavelength edge of the thulium emission band (i.e. 1620-1660 nm). The Ge/Tm doped fiber shows an intrinsic blue-shifted absorption/emission cross-section compared to aluminum/thulium (Al/Tm) co-doped fiber, which greatly improves the short wavelength amplification and has enabled us to further extend the shortest wavelength of emission towards 1600 nm. Using this glass fiber composition, we have demonstrated both a silica-based thulium doped fiber amplifier (TDFA) in the 1628-1655 nm waveband and a tunable thulium-doped fiber laser (TDFL) capable of accessing the telecom U-band wavelength region. These results represent by far the shortest amplifier/laser wavelengths reported to-date from TDFAs/TDFLs.

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More information

Submitted date: 3 September 2019
Accepted/In Press date: 3 December 2019
Published date: 3 December 2019
Keywords: Thulium fiber, amplifier

Identifiers

Local EPrints ID: 433801
URI: https://eprints.soton.ac.uk/id/eprint/433801
ISSN: 1094-4087
PURE UUID: d71f224c-35b1-4d64-81ab-ab69a6abb144
ORCID for David Richardson: ORCID iD orcid.org/0000-0002-7751-1058

Catalogue record

Date deposited: 04 Sep 2019 16:30
Last modified: 07 Dec 2019 05:01

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