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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea


  • Vol. 1, Iss. 2 — Sep. 30, 1997
  • pp: 110–115

Cascaded Raman fiber amplifier operating at 1.3.mu.m using WDM couplers

Do-Il Chang, Hong-Jin Kong, S.V. Chernikov, M.J. Guy, and J. R. Taylor  »View Author Affiliations

Journal of the Optical Society of Korea, Vol. 1, Issue 2, pp. 110-115 (1997)

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We report effcient cascaded Raman generation and signal amplification at 1.3.mu.m achieved in a ring resonator constructed solely from fiber components, i.e. fusion WDM couplers. Low-loss single-mode fiber with moderate <tex>$GeO_2$</tex> content (18 mole %) is used as an active medium and pumped by a Nd:YAG laser at 1.064.mu.m. In a resonant cascaded geometry, this generates the third Stokes line at 1.24.mu.m, which acts as a pump for signal wavelength around 1.3.mu.m. A DFB laser operating at 1.315.mu.m is used to provide an input signal. An output signal powers up to 20 dBm (100 mW) with a 28 dB Raman gain are attained, where the Nd:YAG pump power is 3.4 W. It is also shown experimentally that it is important to use optical filters to suppress feedback from the resonator, permitting high Raman gain and good signal quality.

© 1997 Optical Society of Korea

Original Manuscript: July 7, 1997
Published: September 1, 1997

Do-Il Chang, Hong-Jin Kong, S.V. Chernikov, M.J. Guy, and J. R. Taylor, "Cascaded Raman fiber amplifier operating at 1.3.mu.m using WDM couplers," J. Opt. Soc. Korea 1, 110-115 (1997)

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