Broad and ultra-flattened supercontinuum generation in the visible wavelengths based on the fundamental mode of photonic crystal fibre with central holes * Yuan Jin-Hui(苑金辉) a) † , Sang Xin-Zhu(桑新柱) a) , Yu Chong-Xiu(余重秀) a) , Xin Xiang-Jun(忻向军) a) , Shen Xiang-Wei(申向伟) a) , Zhang Jin-Long(张锦龙) a) , Zhou Gui-Yao(周桂耀) b) , Li Shu-Guang(李曙光) b) , and Hou Lan-Tian (侯蓝田) b)
With the full-vector plane-wave method (FVPWM) and the full-vector beam propagation method (FVBPM), the dependences of the band-gap and mode characteristics on material index and cladding structure parameter in anti-resonance guiding photonic crystal fibres (ARGPCFs) are sufficiently analysed. An ARGPCF operating in the near-infrared wavelength is shown. The influences of the high index cylinders, glass interstitial apexes and silica structure on the characteristics of band-gaps and modes are deeply investigated. The equivalent planar waveguide theory is used for analysing such an ARGPCF filled by the isotropic materials, and the resonance and the anti-resonance characteristics can be well predicted.
Polarisation-sensitive four-wave mixing and soliton self-frequency shift effect in the highly birefringent photonic crystal fibre * Yuan Jin-Hui(苑金辉) a) † , Sang Xin-Zhu(桑新柱) a) , Yu Chong-Xiu (余重秀) a) , Xin Xiang-Jun(忻向军) a) , Li Shu-Guang(李曙光) b) , Zhou Gui-Yao(周桂耀) b) , and Hou Lan-Tian(侯蓝田) b)
Optical buffers are critical for optical signal processing in future optical packet-switched networks. In this paper, a theoretical study as well as an experimental demonstration on a new optical buffer with large dynamical delay time is carried out based on cascaded double loop optical buffers (DLOBs). It is found that pulse distortion can be restrained by a negative optical control mode when the optical packet is in the loop. Noise analysis indicates that it is feasible to realise a large variable delay range by cascaded DLOBs. These conclusions are validated by the experiment system with 4-stage cascaded DLOBs. Both the theoretical simulations and the experimental results indicate that a large delay range of 1–9999 times the basic delay unit and a fine granularity of 25 ns can be achieved by the cascaded DLOBs. The performance of the cascaded DLOBs is suitable for the all optical networks.
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