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Spectral control of optical gain in a rare earth-doped optical fiber using novel triple layered structures

Spectral control of optical gain in a rare earth-doped optical fiber using novel triple layered structures
Spectral control of optical gain in a rare earth-doped optical fiber using novel triple layered structures
Novel techniques to control the effective emission cross section of a rare earth-doped optical fiber with a functional cladding structure are reviewed for applications in active fiber devices. We discuss evanescent wave filtering (EWF) technique based on the overlap in the radiative transition cross sections between the emitting ion in the core and the absorbing ion in the inner cladding. Experimental applications of EWF concept are reviewed for a composite gain medium with the erbium ions in the core and samarium ions in the inner cladding for self-gain flattening in C-band. W-type three layered fiber structure is also analyzed in terms of modal guidance and location of the LP01 mode cut-off. Its application in neodymium and thulium-doped silica fiber laser is discussed to facilitate the radiative transition near 940 and 1600 nm region, respectively. The design concepts, fabrication process, and device performances are discussed for each application.
1068-5200
297-304
Oh, Kyunghwan
b4a576b7-fc35-4c55-aa2a-50b3f3260d1b
Yoo, Seongwoo
701b31f4-b8c5-42ff-9e1c-12cbffa4ca1c
Ryu, Uh-Chan
c5172e09-de25-4ae4-8aef-23e04d133f44
Kim, Seungtaek
eccf9331-708e-486c-b509-01f685f77f13
Soh, Daniel B.S.
ae529451-c40d-4f98-91fa-219fbf0065db
Sahu, Jayanta K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Oh, Kyunghwan
b4a576b7-fc35-4c55-aa2a-50b3f3260d1b
Yoo, Seongwoo
701b31f4-b8c5-42ff-9e1c-12cbffa4ca1c
Ryu, Uh-Chan
c5172e09-de25-4ae4-8aef-23e04d133f44
Kim, Seungtaek
eccf9331-708e-486c-b509-01f685f77f13
Soh, Daniel B.S.
ae529451-c40d-4f98-91fa-219fbf0065db
Sahu, Jayanta K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Nilsson, Johan
f41d0948-4ca9-4b93-b44d-680ca0bf157b

Oh, Kyunghwan, Yoo, Seongwoo, Ryu, Uh-Chan, Kim, Seungtaek, Soh, Daniel B.S., Sahu, Jayanta K. and Nilsson, Johan (2006) Spectral control of optical gain in a rare earth-doped optical fiber using novel triple layered structures. Optical Fiber Technology, 12 (4), 297-304. (doi:10.1016/j.yofte.2006.03.005).

Record type: Article

Abstract

Novel techniques to control the effective emission cross section of a rare earth-doped optical fiber with a functional cladding structure are reviewed for applications in active fiber devices. We discuss evanescent wave filtering (EWF) technique based on the overlap in the radiative transition cross sections between the emitting ion in the core and the absorbing ion in the inner cladding. Experimental applications of EWF concept are reviewed for a composite gain medium with the erbium ions in the core and samarium ions in the inner cladding for self-gain flattening in C-band. W-type three layered fiber structure is also analyzed in terms of modal guidance and location of the LP01 mode cut-off. Its application in neodymium and thulium-doped silica fiber laser is discussed to facilitate the radiative transition near 940 and 1600 nm region, respectively. The design concepts, fabrication process, and device performances are discussed for each application.

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Published date: 2006

Identifiers

Local EPrints ID: 46936
URI: http://eprints.soton.ac.uk/id/eprint/46936
ISSN: 1068-5200
PURE UUID: 3d39d4bb-06e7-41d1-a8c1-5317f8c68853
ORCID for Johan Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

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Date deposited: 24 Jul 2007
Last modified: 20 Jul 2019 01:11

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