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Cladding-pumped Raman fiber amplifier

Cladding-pumped Raman fiber amplifier
Cladding-pumped Raman fiber amplifier
Cladding-pumped rare-earth-doped fibers and Raman fiber devices have been two of the most compelling advances in the area of high-power fiber amplifiers and lasers in recent years. Cladding-pumping enables pumping with multi-mode pump sources that deliver high-power at a low cost The core of the double-clad fiber can still be single-moded, so that single-mode amplification or lasing can be realized. Raman gain requires high pump powers and Raman conversion is therefore only efficient at high power levels. On the other band, Raman devices are very flexible as gain is available at arbitrary wavelengths with the right pump source. Cladding-pumped Raman fiber devices represent a natural progression to multi-mode pumping and Raman fiber devices. While cladding-pumped Raman fiber devices require pump powers of, say, 100 W, such powers are available from fiber sources as well as from traditional bulk sources. For example, a multimode Nd-doped fiber laser with 1 kW of output power was recently reported. With pulsed sources, however, the required peak powers can be achieved with relatively modest average powers. Here, we report for the first time Raman amplification in a cladding-pumped fiber, without any rare-earth doping. We believe that this is an important step towards a whole class of new optical amplifier devices based on brightness-enhancing nonlinear conversion of multimode pumps, including not only Raman converters but also Brillouin and optical parametric converters.
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Sahu, J.K.
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Jang, J.N.
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Selvas, R.
dee71f12-e1db-4e5a-8e9b-21d8d7dcdab6
Grudinin, A.B.
8f50b467-7d60-46db-b29d-a89b1059a1d8
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Jang, J.N.
7d327151-c4a7-44a8-8177-528e0bad6af6
Selvas, R.
dee71f12-e1db-4e5a-8e9b-21d8d7dcdab6
Grudinin, A.B.
8f50b467-7d60-46db-b29d-a89b1059a1d8

Nilsson, J., Sahu, J.K., Jang, J.N., Selvas, R. and Grudinin, A.B. (2002) Cladding-pumped Raman fiber amplifier. Optical Amplifiers and Their Applications (OAA 2002), Vancouver, Canada. 13 - 16 Jul 2002.

Record type: Conference or Workshop Item (Paper)

Abstract

Cladding-pumped rare-earth-doped fibers and Raman fiber devices have been two of the most compelling advances in the area of high-power fiber amplifiers and lasers in recent years. Cladding-pumping enables pumping with multi-mode pump sources that deliver high-power at a low cost The core of the double-clad fiber can still be single-moded, so that single-mode amplification or lasing can be realized. Raman gain requires high pump powers and Raman conversion is therefore only efficient at high power levels. On the other band, Raman devices are very flexible as gain is available at arbitrary wavelengths with the right pump source. Cladding-pumped Raman fiber devices represent a natural progression to multi-mode pumping and Raman fiber devices. While cladding-pumped Raman fiber devices require pump powers of, say, 100 W, such powers are available from fiber sources as well as from traditional bulk sources. For example, a multimode Nd-doped fiber laser with 1 kW of output power was recently reported. With pulsed sources, however, the required peak powers can be achieved with relatively modest average powers. Here, we report for the first time Raman amplification in a cladding-pumped fiber, without any rare-earth doping. We believe that this is an important step towards a whole class of new optical amplifier devices based on brightness-enhancing nonlinear conversion of multimode pumps, including not only Raman converters but also Brillouin and optical parametric converters.

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More information

e-pub ahead of print date: 2002
Additional Information: PD2-1/2/3 (Postdeadline)
Venue - Dates: Optical Amplifiers and Their Applications (OAA 2002), Vancouver, Canada, 2002-07-13 - 2002-07-16

Identifiers

Local EPrints ID: 17007
URI: http://eprints.soton.ac.uk/id/eprint/17007
PURE UUID: 631da12e-cc12-46a5-b095-e330ba3a7b08
ORCID for J. Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

Catalogue record

Date deposited: 05 Sep 2005
Last modified: 23 Jul 2020 00:27

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Contributors

Author: J. Nilsson ORCID iD
Author: J.K. Sahu
Author: J.N. Jang
Author: R. Selvas
Author: A.B. Grudinin

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