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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 4 — Feb. 24, 2014
  • pp: 4152–4160

Supercontinuum generation in highly nonlinear fibers using amplified noise-like optical pulses

Shih-Shian Lin, Sheng-Kwang Hwang, and Jia-Ming Liu  »View Author Affiliations

Optics Express, Vol. 22, Issue 4, pp. 4152-4160 (2014)

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Supercontinuum generation in a highly nonlinear fiber pumped by noise-like pulses from an erbium-doped fiber ring laser is investigated. To generate ultrabroad spectra, a fiber amplifier is used to boost the power launched into the highly nonlinear fiber. After amplification, not only the average power of the noise-like pulses is enhanced but the spectrum of the pulses is also broadened due to nonlinear effects in the fiber amplifier. This leads to a reduction of the peak duration in their autocorrelation trace, suggesting a similar extent of pulse compression; by contrast, the pedestal duration increases only slightly, suggesting that the noise-like characteristic is maintained. By controlling the pump power of the fiber amplifier, the compression ratio of the noise-like pulse duration can be adjusted. Due to the pulse compression, supercontinuum generation with a broader spectrum is therefore feasible at a given average power level of the noise-like pulses launched into the highly nonlinear fiber. As a result, supercontinuum generation with an optical spectrum spanning from 1208 to 2111 nm is achieved using a 1-m nonlinear fiber pumped by amplified noise-like pulses of 15.5 MHz repetition rate at an average power of 202 mW.

© 2014 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(140.4050) Lasers and laser optics : Mode-locked lasers
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7090) Ultrafast optics : Ultrafast lasers
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Fiber Optics

Original Manuscript: December 13, 2013
Revised Manuscript: January 23, 2014
Manuscript Accepted: February 1, 2014
Published: February 14, 2014

Shih-Shian Lin, Sheng-Kwang Hwang, and Jia-Ming Liu, "Supercontinuum generation in highly nonlinear fibers using amplified noise-like optical pulses," Opt. Express 22, 4152-4160 (2014)

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