Progress in Halide Glass Fibers

1988 ◽  
Vol 125 ◽  
Author(s):  
Ishwar. D. Aggarwal
Keyword(s):  
Optical Fibers ◽  
Glass Fibers ◽  
Focal Plane Arrays ◽  
Power Delivery ◽  
Low Loss ◽  
Long Distance ◽  
Silica Fibers ◽  
Communication Links ◽  
Radiation Resistant ◽  
Overall Reliability

ABSTRACTFluoride glasses are being considered for use in long distance, mid-infrared transmitting optical fibers. The multi-phonon edge of these fibers is shifted to longer wavelengths compared to silica fibers. The intrinsic loss is therefore lower (< 0.01 dB/km) and occurs at about 2.5 microns. Applications for these fibers include ultra-low loss communication links, radiation resistant links, remoting of IR focal plane arrays and IR power delivery. In addition, this ultra low loss optical fiber may be used for fiber guided missiles with capability for distances longer than 500 km. Most of the interest however, has been focused on development of ultra long (thousands of kilometers), repeaterless communication links. Such repeaterless links may decrease system cost and cable weight, while increasing overall reliability and ease of repair compared to silicate optical fibers.

scholarly journals Splicing fluoride glass and silica optical fibers

2019 ◽  
Vol 215 ◽  
pp. 04003
Author(s):  
Solenn Cozic ◽  
Simon Boivinet ◽  
Christophe Pierre ◽  
Johan Boulet ◽  
Samuel Poulain ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Thermal Expansion ◽  
Thermal Cycling ◽  
Critical Point ◽  
Optical Fibers ◽  
Glass Fibers ◽  
Input Power ◽  
Fluoride Glass ◽  
Power Handling ◽  
Silica Fibers

Splicing fluoride glass fibers and silica fibers is a critical point for manufacturing all fibered laser modules. As these materials are extremely different, various problems must be considered: thermal, expansion, mechanical, chemical. Reliability and power handling make priority concerns. We report splices made on a 200/220 multimode silica fiber and a double clad 15/250/290 ZBLAN fiber. Splices are proof tested at 300 g tensile strength. No damage is observed after thermal cycling from -30 °C to 85 °C, at 40 % RH during 24 hours. Typical optical splice loss is about 0.2 dB. They withstand 220 W input power at 976 nm without any damage and drastic temperature increasing.

Polymer and metal-matrix composite-embedded optical fibers for avionics communication links

1997 ◽  
Author(s):  
Scott A. Meller ◽  
Jonathan A. Greene ◽  
Carrie L. Kozikowski ◽  
Kent A. Murphy ◽  
Richard O. Claus
Keyword(s):  
Metal Matrix Composite ◽  
Optical Fibers ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Communication Links

Fabrication of ALF3-Based Glass Fibers

1989 ◽  
Vol 172 ◽  
Author(s):  
Mahmoud R. Shahriari ◽  
Tariq Iqbal ◽  
Paul R. Foy ◽  
Steve J. Saggese ◽  
G. H. Sigel
Keyword(s):  
Thermal Properties ◽  
Laser Power ◽  
Short Range ◽  
Glass Fibers ◽  
Optical Quality ◽  
Chemical Durability ◽  
Power Delivery ◽  
Mechanical And Thermal Properties ◽  
High Optical Quality ◽  
Remote Spectroscopy

AbstractSeveral glass systems based on AIF3 have been synthesized and fabricated into preforms by controlled melting and rotational casting. High optical quality preforms have been drawn into fibers using a specially modified drawing facility. The drawing tower is enclosed with a vertical glove box in which the levels of both moisture and oxygen are kept below 1 ppm during the drawing. The AIF3 -based fibers have shown dramatically superior chemical durability relative to the ZrF4 -based glass fibers. Selected optical, mechanical and thermal properties of these fibers will be presented. AIF3 -based glass fibers offer interesting opportunities for short range applications in the 2–4 micron region of the infrared such as sensing, remote spectroscopy and laser power delivery.

scholarly journals Excellent Mechanical Properties of the Silicate Glasses Modified by CeO2 and TiO2: A New Choice for High-Strength and High-Modulus Glass Fibers

2021 ◽  
Author(s):  
Chao Chen ◽  
Qingong Zhu ◽  
Huanping Wang ◽  
Feifei Huang ◽  
Qinghua Yang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Silicate Glass ◽  
Optical Fibers ◽  
Bending Strength ◽  
Glass Fibers ◽  
High Strength ◽  
Maximum Level ◽  
Compression Modulus ◽  
Co Doping ◽  
Optimum Approach

Abstract As is well known, silicate glass has a stable glass-forming region and mature drawing processes into fibers. In this study, to obtain enhanced mechanical properties, glasses with a composition of SiO2-Al2O3-MgO-CaO-B2O3-Fe2O3 were synthesized using TiO2 and CeO2. When the amount of TiO2 and CeO2 is less than 2 wt%, the mechanical properties increase with increases in the TiO2 and CeO2. However, as the amount of TiO2 and CeO2 increases from 2 to 3.5 wt%, the mechanical properties decrease. Co-doping with 1 wt% TiO2 and 1 wt% CeO2 was found to be the optimum approach, with a density, bending strength, compression strength, and compression modulus of 2.626 g/cm3, 108.36 MPa, 240.18 MPa, and 115.03 GPa, respectively. The optical band gap and Raman spectroscopy proved that, as long as the content of oxygen bonds reaches the maximum level, a kind of best structural stability and mechanical properties will be achieved. Hence, this type of high-strength silicate glass can be used in optical fibers for military defense, wind power generation, and transportation.

scholarly journals Installasi Base Transceiver Station (BTS) untuk Jaringan Node B pada Operator Hutchison 3 Indonesia (H3I)

2015 ◽  
Vol 11 (1) ◽  
pp. 78
Author(s):  
Uzma Septima ◽  
Lince Markis
Keyword(s):  
Receive Signal ◽  
Network Operator ◽  
Long Distance ◽  
New Process ◽  
Station Base ◽  
Communication Links ◽  
Distance Communication ◽  
Base Transceiver Station ◽  
In Transit ◽  
Made In

Base Transceiver Station is a device used to connect mobile-phone or smartphone in order to make long-distance communication, although in doing the movement or in transit from one place to another. Installation Base Transceiver Station for Network Node B At the operator Hutchison 3 Indonesia is done to make the operator Hutchison 3 Indonesia signal received by the phone for the better and not dashed when the user performs long-distance communication links with conditions in performing the movement or in the course of one place to another. Methods beginning the process of physical installation of Base Transceiver Station for Node B network in the operator Hutchison 3 Indonesia and order all the Base Transceiver Station can live well after the battery is connected to a rectifier and the required accuracy when performing the installation Base Transceiver Station. Furthermore, the integration process or Commissioning of the Base Transceiver Station for Node B network operator Hutchison 3 Indonesia on this in order to actively and After Commissioning obtained Receive Signal Level sectoral antennas of -59 dBm which can emit a signal as far as 7 km to 8 km , after the new process or Pointing connection between this new Base Transceiver Station Base Transceiver Station with preexisting and Pointing between Siak new Base Transceiver Station Base Transceiver Station Perawang with Perawang Students who have a distance of 5 km Receive Signal level of -32.4 dBm made in accordance with a budget link provided operator Hutchison 3 Indonesia is -30 dBm to -40 dBm.

scholarly journals Fabrication of Polyimide Optical Waveguide on Silicon Dioxide Layer Stacked Silicon Substrate

2017 ◽  
Vol 17 (2) ◽  
pp. 36
Author(s):  
Dadin Mahmudin ◽  
Shobih ◽  
Pamungkas Daud ◽  
Yusuf Nur Wijayanto
Keyword(s):  
Silicon Dioxide ◽  
Optical Fibers ◽  
Silicon Substrate ◽  
Optical Waveguides ◽  
Ultra Violet ◽  
Long Distance ◽  
Distance Communication ◽  
Paper Fabrication ◽  
Insertion Losses ◽  
Planar Optical Waveguides

Optical waveguides are important for guiding lightwave from a place to other places. Propagation and insertion losses of the optical waveguides should be considered to be in low values. Recently, optical waveguides with circular structures, which are optical fibers, are used widely for guiding lightwave in long-distance optical communication with very low propagation and insertion losses. Simultaneously, optical waveguides with planar structure are also developed for short distance communication in optical devices. We have reported design and analysis of the planar optical waveguides. In this paper, fabrication of planar optical waveguides using a polyimide material on thin silicon dioxide combined with the silicon substrate is reported. The polyimide material is used for the core of the optical waveguides. The silicon dioxide located on the silicon substrate and the air is used for cladding of the optical waveguides. Fabrication of the optical waveguides such as oxidation, photoresist coating, masking, ultra-violet exposure, and etching was done. The fabricated optical waveguides were characterized physically using a standard microscope and scanning electron microscope (SEM). The fabrication processes and characterization results are reported and discussed in detail.

scholarly journals Femtosecond-Laser-Assisted Fabrication of Radiation-Resistant Fiber Bragg Grating Sensors

2022 ◽  
Vol 12 (2) ◽  
pp. 886
Author(s):  
Hun-Kook Choi ◽  
Young-Jun Jung ◽  
Bong-Ahn Yu ◽  
Jae-Hee Sung ◽  
Ik-Bu Sohn ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Fiber Bragg Grating ◽  
Optical Fibers ◽  
Coming Out ◽  
Single Mode ◽  
Femtosecond Laser Irradiation ◽  
Bragg Grating ◽  
Wavelength Shift ◽  
Radiation Resistant ◽  
Fbg Sensors

This paper demonstrates the fabrication of radiation-resistant fiber Bragg grating (FBG) sensors using infrared femtosecond laser irradiation. FBG sensors were written inside acrylate-coated fluorine-doped single-mode specialty optical fibers. We detected the Bragg resonance at 1542 nm. By controlling the irradiation conditions, we improved the signal strength coming out from the FBG sensors. A significant reduction in the Bragg wavelength shift was detected in the fabricated FBG sensors for a radiation dose up to 105 gray, indicating excellent radiation resistance capabilities. We also characterized the temperature sensitivity of the radiation-resistant FBG sensors and detected outstanding performance.

Low loss poly(methylmethacrylate‐d8) core optical fibers

1983 ◽  
Vol 42 (7) ◽  
pp. 567-569 ◽  
Author(s):  
Toshikuni Kaino ◽  
Kaname Jinguji ◽  
Shigeo Nara
Keyword(s):  
Optical Fibers ◽  
Low Loss

Fabrication of low-loss optical fibers by hybridized process

1997 ◽  
Vol 80 (2) ◽  
pp. 7-15
Author(s):  
Kazuaki Yoshida ◽  
Tsuguo Satoh ◽  
Noritsugu Enomoto ◽  
Takeshi Yagi ◽  
Hiroshi Hihara ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Low Loss

Practical low-loss waveguide for long-distance telecommunications

1965 ◽  
Vol 1 (1) ◽  
pp. 14 ◽  
Author(s):  
H.E.M. Barlow ◽  
H.G. Effemey ◽  
S.H. Taheri
Keyword(s):  
Low Loss ◽  
Long Distance
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