摘要
We propose an improved design of photonic crystal fiber (PCF) with ultra broadband-flattened dispersion and ultra-low confinement loss in the telecommunication window. The design is considerably suitable for the generation of wideband supercontinuum spectrum. Numerical results reveal that the proposed PCF structure possesses a low dispersion of 0±1.5 ps/(nm·km) in the wavelengths ranging from 1.134 to 1.805 μm (approximately 700-nm bandwidth) with a confinement loss of less than 10-8 dB/km. In addition, a nonlinear coefficient greater than 11.47 (W·km)-1 and a dispersion slope of as low as -0.005694 ps/(nm2·km) are obtained at 1.55-μm wavelength. Moreover, a symmetric flat supercontinuum spectrum with a 10-dB bandwidth of 190 nm is achieved in a 3-m-long fiber, verifying the excellent optical features of the innovative PCF.
源语言 | 英语 |
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页(从-至) | 1028-1031 |
页数 | 4 |
期刊 | Chinese Optics Letters |
卷 | 8 |
期 | 11 |
DOI | |
出版状态 | 已出版 - 11月 2010 |