基于铅铋玻璃的光子晶体光纤中的两个倍频程超连续谱产生

Two Octaves Supercontinuum Generation in Lead-Bismuth Glass Based Photonic Crystal Fiber.

作者信息

Buczynski Ryszard, Bookey Henry, Klimczak Mariusz, Pysz Dariusz, Stepien Ryszard, Martynkien Tadeusz, McCarthy John E, Waddie Andrew J, Kar Ajoy K, Taghizadeh Mohammad R

机构信息

Institute of Electronic Materials Technology, Wólczyńska 133, 01-919 Warsaw, Poland.

Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK.

出版信息

Materials (Basel). 2014 Jun 19;7(6):4658-4668. doi: 10.3390/ma7064658.

DOI:10.3390/ma7064658

PMID:28788699

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5455900/

Abstract

In this paper we report a two octave spanning supercontinuum generation in a bandwidth of 700-3000 nm in a single-mode photonic crystal fiber made of lead-bismuth-gallate glass. To our knowledge this is the broadest supercontinuum reported in heavy metal oxide glass based fibers. The fiber was fabricated using an in-house synthesized glass with optimized nonlinear, rheological and transmission properties in the range of 500-4800 nm. The photonic cladding consists of 8 rings of air holes. The fiber has a zero dispersion wavelength (ZDW) at 1460 nm. Its dispersion is determined mainly by the first ring of holes in the cladding with a relative hole size of 0.73. Relative hole size of the remaining seven rings is 0.54, which allows single mode performance of the fiber in the infrared range and reduces attenuation of the fundamental mode. The fiber is pumped into anomalous dispersion with 150 fs pulses at 1540 nm. Observed spectrum of 700-3000 nm was generated in 2 cm of fiber with pulse energy below 4 nJ. A flatness of 5 dB was observed in 950-2500 nm range.

摘要

在本文中，我们报道了在由铅铋镓酸盐玻璃制成的单模光子晶体光纤中，在700 - 3000 nm带宽内产生的两个倍频程跨度的超连续谱。据我们所知，这是基于重金属氧化物玻璃的光纤中报道的最宽超连续谱。该光纤采用内部合成的玻璃制造，其在500 - 4800 nm范围内具有优化的非线性、流变学和传输特性。光子包层由8圈气孔组成。该光纤在1460 nm处具有零色散波长（ZDW）。其色散主要由包层中第一圈气孔决定，相对气孔尺寸为0.73。其余七圈的相对气孔尺寸为0.54，这使得光纤在红外范围内具有单模性能，并降低了基模的衰减。该光纤用1540 nm的150 fs脉冲泵浦到反常色散区域。在2 cm长的光纤中，在脉冲能量低于4 nJ的情况下，观察到了700 - 3000 nm的光谱。在950 - 2500 nm范围内观察到了5 dB的平坦度。