標題: | Supercontinuum generation in highly nonlinear fibers using amplified noise-like optical pulses |
作者: | Lin, Shih-Shian Hwang, Sheng-Kwang Liu, Jia-Ming 光電系統研究所 Institute of Photonic System |
公開日期: | 24-二月-2014 |
摘要: | 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. (C) 2014 Optical Society of America |
URI: | http://dx.doi.org/10.1364/OE.22.004152 http://hdl.handle.net/11536/24028 |
ISSN: | 1094-4087 |
DOI: | 10.1364/OE.22.004152 |
期刊: | OPTICS EXPRESS |
Volume: | 22 |
Issue: | 4 |
起始頁: | 4152 |
結束頁: | 4160 |
顯示於類別: | 期刊論文 |