Mechanism of supercontinuum spectrum generation due to cross-phase modulation in a dispertion-flattened/decreasing fiber with low birefringence

Hiroyasu Sone; Zhaoyang Wang; Masaaki Imai; Takeshi Fukuoka; Yasuhiro Harada; Yuichi Suzuki

doi:10.1117/12.667003

28 January 2006 Mechanism of supercontinuum spectrum generation due to cross-phase modulation in a dispertion-flattened/decreasing fiber with low birefringence

Hiroyasu Sone, Zhaoyang Wang, Masaaki Imai, Takeshi Fukuoka, Yasuhiro Harada, Yuichi Suzuki

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Proceedings Volume 6025, ICO20: Optical Communication; 60250G (2006) https://doi.org/10.1117/12.667003
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

Mechanism of supercontinuum(SC) spectrum generation due to cross-phase modulation(XPM) in a dispersionflattened/decreasing fiber(DFDF) with low birefringence has been investigated theoretically and experimentally. By using a XPM, the measured SC spectum width becomes 33.6 % broader than that obtained by using only self-phase modulation (SPM). This fact implys that effectiveness and validity of the sc generation using XPM method. Furthermore, dependence of generated sc spectrum broadening on incident power, polarization angle of the input pulses, and modal birefringence are investigated. consequently, it was velifid that when a polarization angle of the input pulses is 45 degrees with regard to the principal axes of the fiber and incident average power is less than 0.147 mW, soliton trapping takes place due to a balance between soliton pulse powers and modal birefringence value. In addition, it was shown experimentally that for a polarization angle of the input pulses of 22.5 degrees, the sc spectrum is enlarged by the same amount as in the case of 45 degrees.

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Hiroyasu Sone, Zhaoyang Wang, Masaaki Imai, Takeshi Fukuoka, Yasuhiro Harada, and Yuichi Suzuki "Mechanism of supercontinuum spectrum generation due to cross-phase modulation in a dispertion-flattened/decreasing fiber with low birefringence", Proc. SPIE 6025, ICO20: Optical Communication, 60250G (28 January 2006); https://doi.org/10.1117/12.667003

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KEYWORDS

Polarization

Birefringence

Solitons

Modulation

Optical fibers

Dispersion

Numerical analysis

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