Supercontinuum generation in optical fibers

In this paper, we studied SC generation in fiber lasers and in optical fibers pumped by different light sources which include fs and ps pulse sources, and continuous-wave (CW) amplified spontaneous emission (ASE) light sources. First, we demonstrated SC generation with a 10dB spectral bandwidth of 430nm in a fiber ring laser with conventional nonlinear fiber. Second, we proposed and demonstrated a new and efficient approach to generation of a CW SC in optical fibers pumped by a CW ASE light. A bandwidth of 268nm (at -15dB level) with an average spectral density of 2.7mW/nm was demonstrated. Various approaches to flattening the spectrum and increasing the spectral width were also studied. The application of this SC source in WDM passive optical access networks (WDM-PONs) was investigated. Third, the approach of SC generation in a fiber combination of standard SMF and nonlinear DSF pumped by an all-fiber fs pulse Master Oscillator Power Amplifier (MOPA) system was developed. A spectral bandwidth of over 1000nm was demonstrated. Finally, the generation of broad comb-like-spectral light based on the pulse compression of 40GHz optical pulses in a new nonlinear dispersion-decreasing fiber with high SBS threshold was studied. A continuum light source with over 125 channels and a channel spacing of 40 GHz was achieved. The use of this continuum light source as WDM source in WDM-PONs was investigated.

[1]  J. R. Taylor,et al.  Multiwatt average power continua generation in holey fibers pumped by kilowatt peak power seeded ytterbium fiber amplifier , 2002 .

[2]  H. Nagai,et al.  Generation of high-power femtosecond pulse and octave-spanning ultrabroad supercontinuum using all-fiber system , 2005, IEEE Photonics Technology Letters.

[3]  J R Taylor,et al.  Continuous-wave, high-power, Raman continuum generation in holey fibers. , 2003, Optics letters.

[4]  M. Ibsen,et al.  Noise suppression of incoherent light using a gain-saturated SOA: implications for spectrum-sliced WDM systems , 2005, Journal of Lightwave Technology.

[5]  David D. Sampson,et al.  Reduction of excess intensity noise in spectrum-sliced incoherent light for WDM applications , 1997 .

[6]  C. Headley,et al.  Continuous-wave pumping in the anomalous- and normal-dispersion regimes of nonlinear fibers for supercontinuum generation. , 2005, Optics letters.

[7]  Ming-Jun Li,et al.  40 GHz adiabatic soliton compression of a Mach-Zehnder modulator output in a dispersion decreasing fiber with high SBS threshold , 2005, SPIE/OSA/IEEE Asia Communications and Photonics.

[8]  Shenping Li,et al.  Efficient generation of CW supercontinuum in optical fiber pumped by ASE light , 2006, 2006 Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference.

[9]  K. Suzuki,et al.  Intensity stabilisation of spectrum-sliced Gaussian radiation based on amplitude squeezing using semiconductor optical amplifiers with gain saturation , 1999 .

[10]  Jens Limpert,et al.  High average power supercontinuum generation in photonic crystal fibers , 2003 .

[11]  T A Birks,et al.  Supercontinuum generation in tapered fibers. , 2002, Optics letters.

[12]  Valentin Gapontsev,et al.  High-power completely fiber integrated super-continuum sources (Invited Paper) , 2005, SPIE LASE.

[13]  Paul D. Townsend,et al.  Spectral slicing WDM-PON using wavelength-seeded reflective SOAs , 2001 .

[14]  Vincent Couderc,et al.  Multi-watt, continuous wave, continuum generation in dispersion shifted fiber by use of high power fiber source , 2004 .