Abstract Here an integrated compact low-cost all-fiber optical spectrum control device based on a single fiber interferometer and tungsten disulfide is reported. Tungsten disulfide was deposited onto the surface of the non-adiabatic microfiber under the application of the radiation from an amplified spontaneous emission source. Next, the near-infrared light (NIR), which leaked through the strong evanescent field of the microfiber, excited the surrounding tungsten disulfide and generated heat due to the photothermal effect. Therefore, the phase shift of the interference spectrum was caused by the surrounding change in the refractive index (RI). In the experimental work at 1550 nm, a spectral shift equal to 0.8 nm was obtained following the use of a pump laser operating at 980 nm. In addition, the device can may be used as an all-optical switch with a modulation depth of 18.1%. The proposed tungsten disulfide-based all-fiber device has potential application in all-optical signal controllable devices.

中文翻译：

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基于二硫化钨生长的微光纤干涉仪的全光纤光谱调制装置

摘要 本文报道了一种基于单光纤干涉仪和二硫化钨的集成紧凑型低成本全光纤光谱控制装置。在来自放大的自发发射源的辐射作用下，二硫化钨沉积在非绝热微纤维的表面上。接下来，近红外光 (NIR) 通过超细纤维的强衰减场泄漏，激发周围的二硫化钨并由于光热效应产生热量。因此，干涉光谱的相移是由周围折射率 (RI) 的变化引起的。在 1550 nm 的实验工作中，在使用工作在 980 nm 的泵浦激光器后获得了等于 0.8 nm 的光谱偏移。此外，该器件可用作调制深度为18.1%的全光开关。所提出的基于二硫化钨的全光纤器件在全光信号可控器件中具有潜在的应用。