|
|||||
|
|
Modal Birefringence Dependent Supercontinuum Due to Cross-Phase Modulation in a Dispersion-Flattened/Decreasing Fiber |
|
| Authors: | Hiroyasu Sone Tasuku Arai Masaaki Imai Yoh Imai |
| Affiliation: | (1) Department of Electrical and Electronic Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan;(2) Department of Computer Science, Kitami Institute of Technology, 165 Kouen-cho, Kitami 090-8507, Japan;(3) Department of Computer Science and Electronics, Kyushu Institute of Technology, 680-4, Kawazu, Iizuka 820-8502, Japan;(4) Present address: Department of Electrical and Electronic Engineering, Ibaraki University, 4-12-1 Nakanarusawa-cho, Hitachi 316-8511, Japan |
| Abstract: | It was found by numerical analysis that a 320 nm wide and flat spectrum at 20 dB less than the central maximum intensity is generated from cross-phase modulated soliton pulses with 3.5 ps pulse width and 2.3 W peak power, which are propagated through a 2.4km length of dispersion-flattened/decreasing fiber (DFDF). The cross-phase modulation (XPM) at a central wavelength of 1.55 μm is achieved by exciting two orthogonally polarized modes into the principal axes. The wave-vector mismatch between the orthogonal pulses can be neglected because of soliton trapping when the modal birefringence of the DFDF is less than |nox - n0y| = 10−6. The effect of modal birefringence on supercontinuum generation is discussed in temporal and spectral regimes by numerical analysis. |
| Keywords: | nonlinear fiber optics optical soliton propagation cross-phase modulation (XPM) modal birefringence supercontinuum spectrum dispersion-flattened/decreasing fiber |
| 本文献已被 SpringerLink 等数据库收录！ | |