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Bi-doped fiber amplifiers and lasers [Invited]

Bi-doped fiber amplifiers and lasers [Invited]
Bi-doped fiber amplifiers and lasers [Invited]

Bismuth (Bi) doped fibers have shown promising potential for lasers and amplifiers in the 1150-1500 nm and 1600-1800nm wavelength region. Bi-doped aluminosilicate, phosphosilicate and germanosilicate fibers provide luminescence around 1150 nm, 1300 nm and 1450 nm, respectively. Recent results have demonstrated the possibility to extend the Bi luminescence window beyond 1600 nm using Bi-doped high (≥ 50 mol %) germanosilicate fibers. These spectral regions can serve a wide range of applications in medicine, astronomy, defense and to extend the optical fiber communication. However, Bi-doped fiber lasers and amplifiers are still far from their optimum performance owing to the unclear nature of the near-infrared emitting Bi active centers. In this paper, we review the current state of the art of Bi-doped silica fiber lasers (CW and pulsed) and amplifiers in different wavelength bands. Also, we present our work on the development of Bi-doped aluminosilicate and phosphosilicate fiber lasers and amplifiers in the 1180 nm and 1330 nm bands. These lasers and amplifiers find applications in generating visible light sources and to access the second telecommunication window. The fibers used here were fabricated by modified chemical vapor deposition-solution doping technique and characterized for their unsaturable loss. Moreover, we present the influence of pump wavelengths on the gain, noise figure and laser efficiency of these Bi-doped fiber amplifiers and lasers. We also discuss Bi-doped fibers for pulsed laser application and demonstrate a mode-locked Bi-doped fiber laser operating at 1340 nm.

2159-3930
2446-2465
Thipparapu, N. K.
a36a2b4c-b75c-4976-a753-b5fab9e54150
Wang, Y.
629093a5-d7b6-408d-86bf-d2e754f739e6
Wang, S.
5d2cda84-c3a3-45a0-b3af-7600f85c767a
Umnikov, A. A.
9b57cc1b-d0f9-4c34-9409-a58ee0f70250
Barua, P.
ab53bdd9-e00f-46b0-b4f4-5ab6534fe8a6
Sahu, J. K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Thipparapu, N. K.
a36a2b4c-b75c-4976-a753-b5fab9e54150
Wang, Y.
629093a5-d7b6-408d-86bf-d2e754f739e6
Wang, S.
5d2cda84-c3a3-45a0-b3af-7600f85c767a
Umnikov, A. A.
9b57cc1b-d0f9-4c34-9409-a58ee0f70250
Barua, P.
ab53bdd9-e00f-46b0-b4f4-5ab6534fe8a6
Sahu, J. K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2

Thipparapu, N. K., Wang, Y., Wang, S., Umnikov, A. A., Barua, P. and Sahu, J. K. (2019) Bi-doped fiber amplifiers and lasers [Invited]. Optical Materials Express, 9 (6), 2446-2465. (doi:10.1364/OME.9.002446).

Record type: Article

Abstract

Bismuth (Bi) doped fibers have shown promising potential for lasers and amplifiers in the 1150-1500 nm and 1600-1800nm wavelength region. Bi-doped aluminosilicate, phosphosilicate and germanosilicate fibers provide luminescence around 1150 nm, 1300 nm and 1450 nm, respectively. Recent results have demonstrated the possibility to extend the Bi luminescence window beyond 1600 nm using Bi-doped high (≥ 50 mol %) germanosilicate fibers. These spectral regions can serve a wide range of applications in medicine, astronomy, defense and to extend the optical fiber communication. However, Bi-doped fiber lasers and amplifiers are still far from their optimum performance owing to the unclear nature of the near-infrared emitting Bi active centers. In this paper, we review the current state of the art of Bi-doped silica fiber lasers (CW and pulsed) and amplifiers in different wavelength bands. Also, we present our work on the development of Bi-doped aluminosilicate and phosphosilicate fiber lasers and amplifiers in the 1180 nm and 1330 nm bands. These lasers and amplifiers find applications in generating visible light sources and to access the second telecommunication window. The fibers used here were fabricated by modified chemical vapor deposition-solution doping technique and characterized for their unsaturable loss. Moreover, we present the influence of pump wavelengths on the gain, noise figure and laser efficiency of these Bi-doped fiber amplifiers and lasers. We also discuss Bi-doped fibers for pulsed laser application and demonstrate a mode-locked Bi-doped fiber laser operating at 1340 nm.

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ome-9-6-2446 - Version of Record
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Accepted/In Press date: 4 April 2019
e-pub ahead of print date: 2 May 2019
Published date: 1 June 2019

Identifiers

Local EPrints ID: 432072
URI: https://eprints.soton.ac.uk/id/eprint/432072
ISSN: 2159-3930
PURE UUID: a7f8e3ff-3082-4591-aa47-ec177b5f1279
ORCID for N. K. Thipparapu: ORCID iD orcid.org/0000-0002-5153-4737
ORCID for A. A. Umnikov: ORCID iD orcid.org/0000-0001-6006-5410

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Date deposited: 01 Jul 2019 16:30
Last modified: 10 Dec 2019 01:23

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