Glass Optical Guided-Wave Technology

1985 ◽  
Vol 60 ◽  
Author(s):  
T. Miyashita
Keyword(s):  
Optical Fibers ◽  
Communication Systems ◽  
Chalcogenide Glasses ◽  
Guided Wave ◽  
Infrared Wavelength ◽  
Wavelength Division ◽  
Silica Glasses ◽  
Wave Technology ◽  
New Family ◽  
High Silica

AbstractRecent advances of glass materials and fabrication processes will be reviewed in the field of guided-wave technology. A variety of optical fibers and guided-wave devices are in development by using high-silica and non-silica glasses. Following the successful development of silica fiber, a new family of optical fibers is being investigated by using non-silica glasses such as fluoride and chalcogenide glasses, which operate at mid-infrared wavelength range and offer the potential of ultra-low loss. High-silica channel waveguides are fabricated by processing a SiO2TiO2 planer waveguide on a silicon substrate. These are applied to various guided wave optical circuits such as switch and wavelength-division multi/demultiplexer, which would be used for the construction of optical communication systems. The materials and processing techniques influencing optical guided-wave performance are described.

Material and technology trends in fiber optics

2014 ◽  
Vol 3 (4) ◽  
Author(s):  
Kay Schuster ◽  
Sonja Unger ◽  
Claudia Aichele ◽  
Florian Lindner ◽  
Stephan Grimm ◽  
...  
Keyword(s):  
Fiber Optics ◽  
Optical Fibers ◽  
Vapor Deposition ◽  
Glass Melting ◽  
Hybrid Fiber ◽  
New Techniques ◽  
Silica Glasses ◽  
Fiber Properties ◽  
Fiber Fabrication ◽  
High Silica

AbstractThe increasing fields of applications for modern optical fibers present great challenges to the material properties and the processing technology of fiber optics. This paper gives an overview of the capabilities and limitations of established vapor deposition fiber preform technologies, and discusses new techniques for improved and extended doping properties in fiber preparation. In addition, alternative fabrication technologies are discussed, such as a powder-based process (REPUSIL) and an optimized glass melting method to overcome the limits of conventional vapor deposition methods concerning the volume fabrication of rare earth (RE)-doped quartz and high silica glasses. The new preform technologies are complementary with respect to enhanced RE solubility, the adjustment of nonlinear fiber properties, and the possibility of hybrid fiber fabrication. The drawing technology is described based on the requirements of specialty fibers such as adjusted preform and fiber diameters, varying coating properties, and the microstructuring of fiber configurations as low as in the nanometer range.

scholarly journals Suppression of Nonlinear XPM Phenomenon by Selection of Appropriate Transmit Power Levels in the DWDM System

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Tomáš Ivaniga ◽  
Petr Ivaniga
Keyword(s):  
Optical Fibers ◽  
Communication Systems ◽  
Transmission Rate ◽  
Wavelength Division Multiplex ◽  
Nonlinear Phenomena ◽  
Data Systems ◽  
Wavelength Division ◽  
Time Operation ◽  
Real Time Operation ◽  
Optical Transfer

In the 21st century, it is not possible to implement fully optical communication systems without software tools to test the system for all unwanted phenomena occurring during real-time operation. With ever-increasing transmission rate and low latency, nonlinear phenomena are associated with higher power levels and smaller spacing between channels began to appear in OFs (optical fibers). This paper aims to implement a four-channel DWDM (Dense Wavelength Division Multiplex) system on which the nonlinear XPM (cross-phase modulation) phenomenon will be investigated. At the output of the system, we will eliminate the phenomenon (partially suppressed) by the appropriate choice of transmitting power levels (power levels operating at 193,025 THz to 193,175 THz) when the OF is dispersed. In optical transfer data systems a system is functioning if the measured BER parameter is not bigger than 10−12.

Guided-wave optical wavelength-division multi/demultiplexer using high-silica channel waveguides

1985 ◽  
Vol 21 (8) ◽  
pp. 314 ◽  
Author(s):  
M. Kawachi ◽  
Y. Yamada ◽  
M. Yasu ◽  
M. Kobayashi
Keyword(s):  
Guided Wave ◽  
Wavelength Division ◽  
Optical Wavelength ◽  
Channel Waveguides ◽  
High Silica

Fluorine Containing High-Silica Glasses for Speciality Optical Fibers

2008 ◽  
Vol 39-40 ◽  
pp. 265-268 ◽  
Author(s):  
Johannes Kirchhof ◽  
Sonja Unger ◽  
B. Knappe
Keyword(s):  
Gas Phase ◽  
Optical Fibers ◽  
Optical Filters ◽  
Chemical Thermodynamics ◽  
Experimental Conditions ◽  
Silica Glasses ◽  
Optical Fiber Devices ◽  
Fiber Devices ◽  
High Silica ◽  
Gas Phase Deposition

We investigated the codoping of different high-silica glasses (GeO2 – SiO2, B2O3 – SiO2) with fluorine with respect to the use of such glasses in actual optical fiber devices (fiber Bragg gratings, fiber lasers and amplifiers, optical filters, etc). It could be shown that there is a strong interaction between fluorine and the other dopants germanium and boron during gas phase deposition of the glassy layers. The doping concentration in dependence on the experimental conditions (gas concentrations, flow velocity, temperature) can be understood and quantitatively described on the basis of the chemical thermodynamics (equilibrium chemistry) of the systems. This makes possible the defined preparation of complex fiber structures in terms of refractive index profiles and multielement distributions.

New Non-Oxide Glasses for Optical Waveguiding

1989 ◽  
Vol 152 ◽  
Author(s):  
Jacques Lucas
Keyword(s):  
Optical Fibers ◽  
Optical Waveguides ◽  
Chalcogenide Glasses ◽  
First Generation ◽  
Planar Waveguides ◽  
Oxide Glasses ◽  
New Class ◽  
New Family ◽  
Zirconium Tetrafluoride ◽  
Optical Waveguiding

ABSTRACTThe first generation of infrared optical waveguides operating in the mid I.R. region 0.3 to 4 μm is made from fluoride glasses based on zirconium tetrafluoride. A new family of vitreous materials based on indium fluoride appears to be also promising candidate. The state of art in the field including performances and limitations of these optical fibers will be described. A new class of heavy halide glasses based on tellurium chloride, bromide or iodide is presented in relation with their large optical transmission range covering the 8–12 μm region. First attempts in fiber preparation and planar waveguides deposition will be discussed and compared with the traditional chalcogenide glasses.

Mechanical Properties of SiO2 vs. SiO2-TiO2 Bulk Glasses and Fibers

1991 ◽  
Vol 244 ◽  
Author(s):  
Suresh T. Gulati
Keyword(s):  
Mechanical Properties ◽  
Optical Fibers ◽  
Mechanical Performance ◽  
Fatigue Behavior ◽  
Deformation Mode ◽  
Strength Distribution ◽  
Fused Silica ◽  
Space Applications ◽  
Silica Glasses ◽  
Silica And Titania

ABSTRACTThe mechanical properties of silica and titania-doped silica glasses, in bulk and fiber forms, are presented. These include the elastic properties (E and ν), strength distribution (in tension and bending), fatigue behavior (dynamic and static loading) and fracture toughness. Following a brief review of above properties for fused silica and ULE™ glasses (Coming Codes 7940 and 7971), used primarily for space applications, the mechanical properties data for silica and titania-doped silica-clad optical fibers are presented. The enhancement of mechanical performance of titania-doped silica clad fiber is also discussed.The effect of titania doping on fundamental properties like stress-free activation energy, crack tip pH, and deformation mode of Si-O-Si bond is discussed. In addition, the crack velocity data obtained from DCDC specimens of homogeneous silica and titania-doped silica glasses are compared in an attempt to understand the role titania plays in improving the fatigue resistance of optical fibers.

scholarly journals Ga-La-S-Se glass for visible and thermal imaging

2017 ◽  
Vol 6 (2) ◽  
Author(s):  
Andrea Ravagli ◽  
Christopher Craig ◽  
John Lincoln ◽  
Daniel W. Hewak
Keyword(s):  
Thermal Imaging ◽  
Chalcogenide Glasses ◽  
Infrared Imaging ◽  
Low Cost ◽  
Short Wave ◽  
Infrared Transmission ◽  
New Family ◽  
Near Net Shape ◽  
Se Glass ◽  
Long Wave Infrared

AbstractChalcogenide glasses are emerging as important enabling materials for low-cost infrared imaging by virtue of their transparency in the key short-wave infrared (SWIR) to long-wave infrared (LWIR) bands and the ability to be mass produced and molded into near-net shape lenses. In this paper, we introduce a new family of chalcogenide glasses, which offer visible as well as infrared transmission and improved thermal and mechanical properties. These glasses are based on Ga

scholarly journals Mid-infrared wavelength division (de)multiplexer using an interleaved angled multimode interferometer on the silicon-on-insulator platform

2014 ◽  
Vol 39 (6) ◽  
pp. 1406 ◽  
Author(s):  
Y. Hu ◽  
T. Li ◽  
D. J. Thomson ◽  
X. Chen ◽  
J. Soler Penades ◽  
...  
Keyword(s):  
Silicon On Insulator ◽  
Mid Infrared ◽  
Infrared Wavelength ◽  
Wavelength Division

scholarly journals EDFA AND EYCDFA POWER BOOSTER FOR SECURED, HIGH SPEED AND MULTIPLE WAVELENGTH SERVICES IN OPTICAL COMMUNICATION SYSTEMS USING WDM AND QUAD-SINGLE FORWARD AND TRI BACKWARD PUMPING TECHNIQUE

2021 ◽  
Vol 5 (12) ◽  
Author(s):  
S. Semmalar ◽  
S. Malarkkan
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Communication ◽  
Communication Systems ◽  
High Speed ◽  
Optical Power ◽  
Fiber Amplifier ◽  
Signal Power ◽  
Erbium Doped Fiber Amplifier ◽  
Output Optical Power ◽  
Wavelength Division

Proposed the EDFA and EYCDFA power booster (Erbium Doped Fiber Amplifier- Erbium ytterbium co doped fiber amplifier) with quad pumping for high speed and multi wavelength services in an optical communication. The proposed EDFA and EYCDFA power booster with WDM(Wavelength division multiplexing) simulated by dual forward and Backward pumping, Dual-backward pumping, Tri-single forward and dual backward pumping and Quadsingle forward and tri-backward pumping with respect to Pump power and fiber Length. The parameters Input Optical power, Output Optical power, Forward Signal power, Backward Signal power measured and determined the speed of transmission in all types of pumping methods. From that the proposed EDFA- ans EYCDFA power booster with WDM quad pumping is the best suitable for secured high speed optical telecommunication systems. The results shown in Quad pumping Output optical power is maximum 25.2dB and optimum spectral forward Signal power is 30.5dBm and very less spectral optical backward signal power of -25.4dBm with Length 5m

scholarly journals PHOTONIC CRYSTAL FIBRES DESIGN USING A MULTICRITERIA BASED SOFTWARE

2011 ◽  
Author(s):  
I. Sassi ◽  
N. Belacel ◽  
Y. Bouslimani ◽  
H. Hamam
Keyword(s):  
Photonic Crystal ◽  
Optical Fibers ◽  
Communication Systems ◽  
Inductive Learning ◽  
Single Mode ◽  
Crystal Fiber ◽  
Optical Propagation ◽  
Multicriteria Method ◽  
Crystal Fibers ◽  
Physical Phenomena

The single-mode optical fiber used currently in communication systems starts showing many limitations especially for the high rates. Several physical phenomena related to the optical propagation are the cause of these limitations. The use of photonic crystal fibers (PCF) makes it possible to control most of these phenomena. In this paper, a multicriteria method is used for the design of the photonic crystal fiber with the user-defined optical proprieties. This method combines the deductive and the inductive learning and it is introduced for the first time in the field of optical fibers. This multicriteria method proves to be a powerful tool for the PCF fibers design.

Sign in / Sign up

Export Citation Format

Share Document