To Fabricate Bragg Grating on D-Shaped Optical Fibre by Micro-Pressing Method

2013 ◽  
Vol 311 ◽  
pp. 472-476
Author(s):  
Fang Chang Hsu ◽  
Farn Tsei Chen ◽  
Chi Ting Ho
Keyword(s):  
Optical Fiber ◽  
Interference Lithography ◽  
Bragg Grating ◽  
Test Results ◽  
Pdms Mold ◽  
Molding Process ◽  
Replication Process ◽  
Pressing Method ◽  
The Core ◽  
Surface Grating

In this paper, we proposed a method to fabricate a D-shaped optical fiber of Bragg surface grating filter component by D-shaped fiber polishing along with photolithography、holographic interference lithography technologies and micro-molding process. The optical fiber was side-polished until it reaches the core of fiber. The master Bragg grating was first fabricated on the positive photoresister by using the holography interference lithography, then the patterned resist was used as a mother mold to transfer the pattern onto a hard polydimethylsiloxane (hPDMS)/ polydimethylsiloxane (PDMS) mold. The gratings pattern on hPDMS/PDMS was then transferred onto the UV polymer on the surface of a D-shaped fiber using a UV replication process. The transmission spectra of the resulting gratings were measured, with test results showing the transmission dip of -17dB , and 3-dB-transmission bandwidth of 9nm.

Using Micro-Pressing Method to Fabricate Bragg Grating on D-Shaped Optical Fiber

2011 ◽  
Vol 314-316 ◽  
pp. 1799-1805
Author(s):  
Chih Wei Hsu ◽  
Feng Tsai Weng ◽  
Chi Ting Ho
Keyword(s):  
Optical Fiber ◽  
Interference Lithography ◽  
Bragg Grating ◽  
Test Results ◽  
Pdms Mold ◽  
Molding Process ◽  
Replication Process ◽  
Pressing Method ◽  
The Core ◽  
Surface Grating

In this paper, we proposed a method to fabricate a D-shaped optical fiber of Bragg surface grating filter component by D-shaped fiber polishing along with photolithography、holographic interference lithography technologies and micro-molding process. The optical fiber was side-polished until it reaches the core of fiber. The master Bragg grating was first fabricated on the positive photoresister by using the holography interference lithography, then the patterned resist was used as a mother mold to transfer the pattern onto a hard polydimethylsiloxane (hPDMS)/ polydimethylsiloxane (PDMS) mold. The gratings pattern on hPDMS/PDMS was then transferred onto the UV polymer on the surface of a D-shaped fiber using a UV replication process. The transmission spectra of the resulting gratings were measured, with test results showing the transmission dip of -17dB , and 3-dB-transmission bandwidth of 9nm.

scholarly journals Optical Fiber Bragg Grating Temperature Sensor

2014 ◽  
Vol 7 (4) ◽  
pp. 40-46
Author(s):  
Marwan L. Yousf ◽  
Ihssan A. Kadham ◽  
Tahreer S. Mansour ◽  
Khalil I. Hajim
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Temperature Sensor ◽  
Important Application ◽  
Bragg Grating ◽  
Wavelength Shift ◽  
Bragg Wavelength ◽  
Diffraction Plane ◽  
The Core ◽  
Index Modulation

In this work, uniform Fiber Bragg Grating (FBG) temperature sensor system were implemented and investigated due to measurement of the Bragg wavelength shift. An (FBG) is an optical fiber in which the refractive index in the core is perturbed by Germanium, forming a periodic index modulation profile. When light is guided through a fiber granting, it is scattered at each diffraction plane, except at those wavelengths which satisfy the Bragg resonance conditionAn important application of FBG technology is sensing. The reflected wavelength from the FBG depends on physical properties such as temperature. By integration the FBG with broadband light, the shift in peak reflectivity wavelength can be used as a measure for the temperature.It has been shown from the results that the FBG is very sensitive to variations in temperature degrees and the sensitivity was (1pm/0.1°C), also observed from the results, the relation between the shifted Bragg wavelength and temperature degrees was linear.

Research on Temperature Characteristic of Porous Cement Concrete

2011 ◽  
Vol 374-377 ◽  
pp. 2105-2109
Author(s):  
Li Qun Hu ◽  
Wei Si Ma ◽  
Hong Qing Hou
Keyword(s):  
Wind Speed ◽  
Moisture Content ◽  
Thermal Conduction ◽  
Temperature Characteristic ◽  
Specimen Thickness ◽  
Cement Concrete ◽  
Molding Process ◽  
Pressing Method ◽  
Island Effect ◽  
Conduction Properties

This research aims to study the temperature characteristic of porous cement concrete as an alternative pavement that can help to mitigate urban heat island effect, and all the benefits it can provide, along with several offspring. Three experiments conducted in this research focus on the effect of specimen thickness,moisture content and wind speed on the thermal conduction properties of porous cement concrete. Isostatic pressing method is adopted in the molding process of specimens and reserved holes method is utilized to measure the internal temperature of the specimens.The data presented in this paper explains the tend of thermal conduction properties accompanying the increase of specimen thickness,moisture content and wind speed.

Contribution of Embedded Optical Fiber with Bragg Grating in Composite Structures for Tests-Simulations Dialogue

2006 ◽  
Vol 13 (5) ◽  
pp. 429-439 ◽  
Author(s):  
Francis Collombet ◽  
Matthieu Mulle ◽  
Yves-Henri Grunevald ◽  
Rédouane Zitoune
Keyword(s):  
Optical Fiber ◽  
Composite Structures ◽  
Bragg Grating

scholarly journals Microcautery based on zinc metallic nanoparticles photodeposited on the core of an optical fiber

2017 ◽  
Vol 392 ◽  
pp. 492-497 ◽  
Author(s):  
P. Zaca-Morán ◽  
C.F. Pastelín ◽  
C. Morán ◽  
G.F. Pérez-Sánchez ◽  
F. Chávez
Keyword(s):  
Optical Fiber ◽  
Metallic Nanoparticles ◽  
The Core
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