Observation of symmetrical reflection sidebands in a silica suspended-core fiber Bragg grating

Abstract

Abstract:We have observed symmetrical sidebands in reflection from Bragg grating written in a silica suspended-core fiber, which are caused by longitudinal periodic refractive index modulation in the Ge-doped suspended-core fiber with a core diameter of ~1.3 µm. Our simulation shows that the effective refractive index of the guided mode varied by 0.023% along the fiber with a period of ~650 µm. The periodic index variation can lead to amplitude modulation of fiber Bragg gratings, which can be studied by observing the spectra of a fiber Bragg grating written in the Ge-doped core. In addition, we have also characterized the temperature and strain responses of the fiber Bragg gratings, and showed that both responses in the suspended-core fiber are 20 to 25% lower than that of a fiber Bragg grating written on a conventional fiber. sensor system for simultaneous measurement of quasi-static strain and temperature using discrete wavelet transform," Meas. Sci. Technol. 17(2), 384-392 (2006). ©2010 Optical Society of America

The Nanofication and Functionalization of Bacterial Cellulose and Its Applications

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Ultrahigh birefringence index-guiding photonic crystal fiber and its application for pressure and temperature discrimination

“…In this Letter, we continue from our previous study of Hi-Bi Ge-doped index-guiding PCF [16] to report on an ultrahigh birefringence index-guiding PCF with two large holes and a measured phase modal birefringence of ∼1.1 × 10 −2 . To our knowledge, this is the highest value for any microstructured fibers reported to date, and more than an order of magnitude higher than any solid core fibers previously demonstrated.…”

Bacterial cellulose composites: Synthetic strategies and multiple applications in bio‐medical and electro‐conductive fields

“…Initially, BC was synthesized through a static culture technique, where BC mats were produced with varying thickness. However, the fermentation was subjected to agitation techniques for which numerous reactors and fermenters were designed to enhance the production and satisfy the commercial demands [17–20]. In addition to its production, the physicochemical features of BC also vary to a great extent with culturing technique and this explains why different methods were applied to obtain BC with specific properties.…”