An efficient method for supercontinuum generation in dispersion-tailored Lead-silicate fiber taper

Abstract In this paper we theoretically study the broadband mid-IR supercontinuum generation (SCG) in a lead-silicate microstructured fiber (the glass for simulation is SF57). The total dispersion of the fiber can be tailored by changing the core diameter of the fiber so that dispersion profiles with two zero dispersion wavelengths (ZDWs) can be obtained. Numerical simulations of the SCG process in a 4 cm long SF57 fiber/fiber taper seeded by femto-second pulses at telecommunications wavelength of 1.55 µm are presented. The results show that a fiber taper features a continuous shift of the longer zero dispersion wavelength. This extends the generated continuum to a longer wavelength region compared to fibers with fixed ZDWs. The phase-matching condition (PMC) is continuously modified in the fiber taper and the bandwidth of the generated dispersive waves (DWs) is significantly broadened.

[1]  Heike Ebendorff-Heidepriem,et al.  Highly nonlinear and anomalously dispersive lead silicate glass holey fibers. , 2003, Optics express.

[2]  Thibaut Sylvestre,et al.  Tailoring CW supercontinuum generation in microstructured fibers with two-zero dispersion wavelengths. , 2007, Optics express.

[3]  Toshio Morioka,et al.  Flatly broadened supercontinuum spectrum generated in a dispersion decreasing fibre with convex dispersion profile , 1997 .

[4]  E. Sorokin,et al.  Raman effects in the infrared supercontinuum generation in soft-glass PCFs , 2007, Applied physics. B, Lasers and optics.

[5]  Anatoly Efimov,et al.  Coherent mid-infrared broadband continuum generation in non-uniform ZBLAN fiber taper. , 2009, Optics express.

[6]  K. Morinaga,et al.  Measurement of viscosity of multi-component glasses in the wide range for fiber drawing , 1998 .

[7]  Ole Bang,et al.  The role of the second zero-dispersion wavelength in generation of supercontinua and bright-bright soliton-pairs across the zero-dispersion wavelength. , 2005, Optics express.

[8]  Benjamin J Eggleton,et al.  Low-threshold supercontinuum generation in highly nonlinear chalcogenide nanowires. , 2008, Optics letters.

[9]  Gwenael Mazé,et al.  Mid-infrared supercontinuum generation to 4.5 microm in ZBLAN fluoride fibers by nanosecond diode pumping. , 2006, Optics letters.

[10]  Norihiko Nishizawa,et al.  Flatly broadened, wideband and low noise supercontinuum generation in highly nonlinear hybrid fiber. , 2004, Optics express.

[11]  M Cronin-Golomb,et al.  Over 4000 nm bandwidth of mid-IR supercontinuum generation in sub-centimeter segments of highly nonlinear tellurite PCFs. , 2008, Optics express.

[12]  E. M. Vogel,et al.  Nonlinear optical phenomena in glass , 1991 .

[13]  M. Nishimura,et al.  Silica-based functional fibers with enhanced nonlinearity and their applications , 1999 .

[14]  P. Russell,et al.  Soliton Self-Frequency Shift Cancellation in Photonic Crystal Fibers , 2003, Science.

[15]  P. Petropoulos,et al.  High-nonlinearity dispersion-shifted lead-silicate holey fibers for efficient 1-/spl mu/m pumped supercontinuum generation , 2006, Journal of Lightwave Technology.

[16]  K. Thyagarajan,et al.  Design optimisation for obtaining flat, high power supercontinuum source over C + L band. , 2006, Optics express.

[17]  M Lehtonen,et al.  Enhanced bandwidth of supercontinuum generated in microstructured fibers. , 2004, Optics express.

[18]  T. Andersen,et al.  Supercontinuum generation by femtosecond single and dual wavelength pumping in photonic crystal fibers with two zero dispersion wavelengths. , 2005, Optics express.

[19]  P. Petropoulos,et al.  Mid-IR Supercontinuum Generation From Nonsilica Microstructured Optical Fibers , 2007, IEEE Journal of Selected Topics in Quantum Electronics.

[20]  William J. Wadsworth,et al.  Supercontinuum generation in tapered fibers. , 2000, Optics letters.

[21]  Govind P. Agrawal,et al.  Nonlinear Fiber Optics , 1989 .

[22]  Yasuhide Tsuji,et al.  Spectral Phase and Intensity Evolutions of Supercontinuum Generation in a Biconical Tapered Fiber , 2007 .