Temnykh Ivan A, Baril Neil F, Liu Zhiwen, Badding John V, Gopalan Venkatraman
Department of Material Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA.
Opt Express. 2010 Mar 1;18(5):5305-13. doi: 10.1364/OE.18.005305.
We fabricate a novel silicon-core silica-cladding optical fiber using high pressure chemical fluid deposition and investigate optical transmission characteristics at the telecommunications wavelength of 1550 nm. High thermo-optic and thermal expansion coefficients of silicon give rise to a thermal phase shift of 6.3 rad/K in a 4 mm-long, 6.9 microm diameter fiber acting as a Fabry-Perot resonator. Using both power and wavelength modulation, we observe all-optical bistability at a low threshold power of 15 mW, featuring intensity transitions of 1.4 dB occurring over <0.1 pm change in wavelength. Threshold powers for higher-order multistable states are predicted. Tristability is experimentally confirmed.
我们利用高压化学流体沉积法制造了一种新型的硅芯包层石英光纤，并研究了其在1550 nm电信波长下的光传输特性。硅的高热光系数和热膨胀系数在一根长度为4 mm、直径为6.9微米的光纤（充当法布里-珀罗谐振器）中产生了6.3 rad/K的热相移。通过功率调制和波长调制，我们在15 mW的低阈值功率下观测到了全光双稳性，其强度跃迁为1.4 dB，发生在波长变化小于0.1 pm的范围内。预测了高阶多稳态的阈值功率。通过实验证实了三稳性。
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