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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea


  • Vol. 6, Iss. 3 — Sep. 30, 2002
  • pp: 108–116

Lasing Modes of LD-Pumped Fiber Grating Lasers

Dong-Wook Park and Joon-Hwan Hwang  »View Author Affiliations

Journal of the Optical Society of Korea, Vol. 6, Issue 3, pp. 108-116 (2002)

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Lasing modes of laser-diode-pumped fiber grating lasers are analyzed by coupled-mode theory. First, a power series solution of the coupled-mode equations is derived under the assumption of an exponentially-decreasing longitudinal modal gain profile for a laser-diode-pumped grating section, followed by determination of the transfer matrix for such a section. Based on these results, an eigenvalue equation for oscillation is then derived and solved numerically for the lasing modes of uniform and phase-shifted fiber grating lasers. Comparisons made with the uniform-gain results indicate that, surprisingly, the lasing mode characteristics are not as significantly altered as might be expected in most cases, even for a highly nonuniform gain profile. In the case of a phase-shifted grating, the phase-shift position appears to have a much greater impact on determining the threshold gain, the modal field distribution, and the front-to-back output power ratio.

© 2002 Optical Society of Korea

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(140.0140) Lasers and laser optics : Lasers and laser optics
(250.0250) Optoelectronics : Optoelectronics

Original Manuscript: April 2, 2002
Published: September 1, 2002

Dong-Wook Park and Joon-Hwan Hwang, "Lasing Modes of LD-Pumped Fiber Grating Lasers," J. Opt. Soc. Korea 6, 108-116 (2002)

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