Single‐mode buried channel waveguide by single‐step electromigration technique using silver film

1988 ◽  
Vol 53 (18) ◽  
pp. 1681-1683 ◽  
Author(s):  
H. Zhenguang ◽  
R. Srivastava ◽  
R. V. Ramaswamy
Keyword(s):  
Silver Film ◽  
Single Mode ◽  
Single Step ◽  
Channel Waveguide ◽  
Buried Channel

Erratum: Laser oscillation of single-mode channel waveguide in Nd:MgO:LiNbO3

1989 ◽  
Vol 25 (25) ◽  
pp. 1747
Author(s):  
E. Lallier ◽  
J.P. Pocholle ◽  
M. Papuchon ◽  
C. Grezes-Besset ◽  
E. Pelletier ◽  
...  
Keyword(s):  
Single Mode ◽  
Channel Waveguide ◽  
Laser Oscillation

Fiber-optic Michelson interferometer based on α-Fe2O3/ZrO2 sensing membrane and its application in trace fluoride-ion detection

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Zizheng Yue ◽  
Wenlin Feng
Keyword(s):  
Silver Film ◽  
Fiber Optic ◽  
Michelson Interferometer ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Ion Concentration ◽  
Fluoride Ion ◽  
Ion Detection ◽  
Core Fiber ◽  
Sensing Membrane

Abstract In this work, a fiber-optic fluoride-ion-detection Michelson interferometer based on the thin-core fiber (TCF) and no-core fiber (NCF) coated with α-Fe2O3/ZrO2 sensing film is proposed and presented. The single-mode fiber (SMF) is spliced with the TCF and NCF in turn, and a waist-enlarged taper is spliced between them. Then, a silver film is plated on the end face of NCF to enhance the reflection. After the absorption of fluoride ion by the sensing film, the effective refractive index (RI) of the coated cladding will change, which leads to the regular red shift of the interference dip with the increasing fluoride-ion concentration. Thus, the fluoride-ion concentrations can be determined according to the corresponding dip wavelength shifts. The results show that the sensor has an excellent linear response (R 2 = 0.995) with good sensitivity (8.970 nm/ppm) when the fluoride-ion concentration is in the range of 0–1.5 ppm. The response time is about 15 s. The sensor has the advantage of good selectivity, good temperature and pH stabilities, and can be applied to detect fluoride ion effectively.

Laser oscillation of single-mode channel waveguide in Nd:MgO:LiNbO3

1989 ◽  
Vol 25 (22) ◽  
pp. 1491 ◽  
Author(s):  
E. Lallier ◽  
J.P. Pocholle ◽  
M. Papuchon ◽  
C. Grezes-Besset ◽  
E. Pelletier ◽  
...  
Keyword(s):  
Single Mode ◽  
Channel Waveguide ◽  
Laser Oscillation

scholarly journals Room-temperature continuous-wave operation of Ti:sapphire buried channel-waveguide lasers fabricated via proton implantation

2006 ◽  
Vol 31 (23) ◽  
pp. 3450 ◽  
Author(s):  
C. Grivas ◽  
D. P. Shepherd ◽  
R. W. Eason ◽  
L. Laversenne ◽  
P. Moretti ◽  
...  
Keyword(s):  
Room Temperature ◽  
Continuous Wave ◽  
Channel Waveguide ◽  
Buried Channel ◽  
Waveguide Lasers ◽  
Continuous Wave Operation ◽  
Proton Implantation

Mathematical Modelling of Microwave Pyrolysis

2013 ◽  
Vol 11 (1) ◽  
pp. 543-559
Author(s):  
Elham Khaghanikavkani ◽  
Mohammed M. Farid
Keyword(s):  
Silicon Carbide ◽  
Electromagnetic Field ◽  
Kinetic Equations ◽  
Single Mode ◽  
Single Step ◽  
Phase Changes ◽  
Microwave Cavity ◽  
Heating Process ◽  
Order Kinetic ◽  
Microwave Pyrolysis

Abstract This study deals with a detailed numerical investigation of the microwave heating process in plastic pyrolysis. The pyrolysis of high-density polyethylene (HDPE) was studied using a single-mode microwave cavity, TE10 mode, at 2.45 GHz with two different absorbents, as carbon and silicon carbide, and the results were compared. The temperature distribution inside the sample was determined by solving the conservation equations coupled with the microwave and chemical kinetic equations. Lambert’s law was applied to describe the electromagnetic field in the microwave cavity. The effective heat capacity method was used to account for the latent heat in the melting range of plastic. The heat of the reaction was taken into account using first-order kinetic equations assuming a single-step reaction. One-dimensional model equations were solved using the finite difference method utilising MATLAB codes. The model developed in this study provides a better understanding of the fundamental mechanisms of the microwave pyrolysis of HDPE based on a combination of electromagnetic field and thermal models. The primary focus was to incorporate and investigate the effect of the phase changes and reaction during microwave pyrolysis. The results show that the temperature profile strongly depends on the physical properties of the material. Silicon carbide provides more uniform heating distribution compared with carbon.

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