Radiation-induced transmission loss in low water peak single mode fibers

2013 ◽  
Author(s):  
Tingyun Wang ◽  
Zhongyin Xiao ◽  
Wenyun Luo ◽  
Jianxiang Wen ◽  
Jianchong Yin ◽  
...  
Keyword(s):  
Transmission Loss ◽  
Single Mode ◽  
Radiation Induced

Deep-UV materials

2018 ◽  
Vol 7 (4) ◽  
pp. 225-242 ◽  
Author(s):  
Doris Ehrt
Keyword(s):  
Transmission Loss ◽  
Industrial Applications ◽  
Trace Impurities ◽  
Intrinsic Absorption ◽  
Electron Transitions ◽  
Radiation Induced ◽  
Deep Ultraviolet ◽  
Main Components ◽  
Extrinsic Absorption

Abstract Materials with high deep-ultraviolet (DUV; λ<300 nm) transmission are important for many industrial applications. Fluoride single crystals and various glasses, pure SiO2, fluoride, phosphate, multicomponent silicates, and organic materials (PMMA), were investigated. The role of intrinsic absorption (UV edge) due to electron transitions between the main components, and extrinsic absorption due to trace impurities, effect of polyvalent ions, redox behavior, and radiation-induced transmission loss were considered. The optical basicity and optical properties were used to order the materials.

scholarly journals Single-Mode Tapered Vertical SU-8 Waveguide Fabricated by E-Beam Lithography for Analyte Sensing

Sensors ◽  
2019 ◽  
Vol 19 (15) ◽  
pp. 3383 ◽  
Author(s):  
Yu Xin ◽  
Gregory Pandraud ◽  
Yongmeng Zhang ◽  
Paddy French
Keyword(s):  
Transmission Loss ◽  
Coupling Efficiency ◽  
Single Mode ◽  
Optical Measurements ◽  
Direct Writing ◽  
Sidewall Roughness ◽  
Scattering Loss ◽  
Waveguide Loss ◽  
One Step ◽  
Saline Solutions

In this paper, we propose a novel vertical SU-8 waveguide for evanescent analyte sensing. The waveguide is designed to possess a vertical and narrow structure to generate evanescent waves on both sides of the waveguide’s surface, aimed at increasing the sensitivity by enlarging the sensing areas. We performed simulations to monitor the influence of different parameters on the waveguide’s performance, including its height and width. E-beam lithography was used to fabricate the structure, as this one-step direct writing process enables easy, fast, and high-resolution fabrication. Furthermore, it reduces the sidewall roughness and decreases the induced scattering loss, which is a major source of waveguide loss. Couplers were added to improve the coupling efficiency and alignment tolerance, and will contribute to the feasibility of a plug-and-play optical system. Optical measurements show that the transmission loss is 1.03 ± 0.19 dB/cm. The absorption sensitivity was measured to be 4.8 dB per refractive index unit (dB/RIU) for saline solutions with various concentrations.

Fabrication, Characterization and Microsensing of Whispering-Gallery Mode Micro-Coupling Systems

2008 ◽  
Author(s):  
Qiulin Ma ◽  
Tobias Rossmann ◽  
Zhixiong Guo
Keyword(s):  
Transmission Loss ◽  
Coupling Efficiency ◽  
High Sensitivity ◽  
Single Mode ◽  
Whispering Gallery Mode ◽  
Single Mode Fiber ◽  
Whispering Gallery ◽  
Coupling System ◽  
Wide Range ◽  
Micro Sensor

An optical micro-coupling system of whispering-gallery mode usually consists of a resonator (e.g. a sphere) and a coupler (e.g. a taper). In this report, silica microspheres of 50–500 μm in diameter are fabricated by hydrogen flame fusing of an end of a single mode fiber or fiber taper. Fiber tapers are fabricated by the method of heating and pulling that meets an adiabatic condition. Taper’s waist diameter can routinely be made less than 1 μm and almost zero transmission loss in a taper is achieved which allows an effective and phase-matched coupling for a wide range sizes of microspheres. Both resonators and couplers’ surface microstructure and shapes are examined by scanning electronic microscopy. Three regimes of coupling are achieved, enabling a good flexibility to control Q value and coupling efficiency of a micro-coupling system. Whispering gallery mode shift is used to demonstrate a novel temperature micro-sensor. Its sensitivity determined from actual experimental results agrees well with the theoretical value. A concept of using the photon’s cavity ring down (CRD) in the microsphere to make a novel high-sensitivity trace gas micro-sensor is proposed. The CRD time constant when ammonia is chosen as the analyte gas is predicted using the simulated absorption lines.

scholarly journals Transmission loss between single-mode Gaussian antennas

2016 ◽  
Vol 24 (17) ◽  
pp. 19491 ◽  
Author(s):  
Nicolas Perlot ◽  
Michael Rohde
Keyword(s):  
Transmission Loss ◽  
Single Mode

Gamma-ray-radiation-induced damage to silicon single-mode fiber

Optik ◽  
2010 ◽  
Vol 121 (21) ◽  
pp. 1998-2000 ◽  
Author(s):  
Jie Xu ◽  
Shang-hong Zhao ◽  
Rui Hou ◽  
Sheng-sheng Yang ◽  
Tian-ping Zhang ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Radiation Induced

Gamma-radiation-induced degradation of actively pumped single-mode ytterbium-doped optical fibers

2014 ◽  
Author(s):  
B. Singleton ◽  
J. Petrosky ◽  
M. Pochet ◽  
N. G. Usechak ◽  
S. A. Francis
Keyword(s):  
Gamma Radiation ◽  
Optical Fibers ◽  
Single Mode ◽  
Radiation Induced

Visible radiation-induced connection of single-mode IR fibres in a photopolymerising composition

2008 ◽  
Vol 38 (12) ◽  
pp. 1142-1146 ◽  
Author(s):  
Sergei N Mensov ◽  
Yu V Polushtaitsev ◽  
Evgenii M Dianov ◽  
M I Belovolov ◽  
V B Makhalov
Keyword(s):  
Single Mode ◽  
Visible Radiation ◽  
Radiation Induced
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