Hybrid Optical Fibers: Hybrid Optical Fibers – An Innovative Platform for In‐Fiber Photonic Devices (Advanced Optical Materials 1/2016)

2016 ◽  
Vol 4 (1) ◽  
pp. 12-12 ◽  
Author(s):  
Markus Alexander Schmidt ◽  
Alexander Argyros ◽  
Fabien Sorin
Keyword(s):  
Optical Fibers ◽  
Optical Materials ◽  
Photonic Devices

Optical Propagation in Solids

2006 ◽  
Author(s):  
Michael E. Thomas
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Solid State ◽  
Optical Fibers ◽  
Optical Materials ◽  
Photonic Devices ◽  
Index Of Refraction ◽  
Optical Detectors ◽  
Optical Propagation ◽  
Valence Bands

This chapter emphasizes the linear optical properties of solids as a function of frequency and temperature. Such information is basic to understanding the performance of optical fibers, lenses, dielectric and metallic mirrors, window materials, thin films, and solid-state photonic devices in general. Optical properties are comprehensively covered in terms of mathematical models of the complex index of refraction based on those discussed in Chapters 4 and 5. Parameters for these models are listed in Appendix 4. A general review of solid-state properties precedes this development because the choice of an optical material requires consideration of thermal, mechanical, chemical, and physical properties as well. This section introduces the classification of optical materials and surveys other material properties that must be considered as part of total optical system design involving solidstate optics. Solid-state materials can be classified in several ways. The following are relevant to optical materials. Three general classes of solids are insulators, semiconductors, and metals. Insulators and semiconductors are used in a variety of ways, such as lenses, windows materials, fibers, and thin films. Semiconductors are used in electrooptic devices and optical detectors. Metals are used as reflectors and high-pass filters in the ultraviolet. This type of classification is a function of the material’s electronic bandgap. Materials with a large room-temperature bandgap (Eg > 3eV) are insulators. Materials with bandgaps between 0 and 3 eV are semiconductors. Metals have no observable bandgap because the conduction and valence bands overlap. Optical properties change drastically from below the bandgap, where the medium is transparent, to above the bandgap, where the medium is highly reflective and opaque. Thus, knowledge of its location is important. Appendix 4 lists the bandgaps of a wide variety of optical materials. To characterize a medium within the region of transparency requires an understanding of the mechanisms of low-level absorption and scattering. These mechanisms are classified as intrinsic or extrinsic. Intrinsic properties are the fundamental properties of a perfect material, caused by lattice vibrations, electronic transitions, and so on, of the atoms composing the material.

scholarly journals Hybrid Optical Fibers – An Innovative Platform for In‐Fiber Photonic Devices

2015 ◽  
Vol 4 (1) ◽  
pp. 13-36 ◽  
Author(s):  
Markus Alexander Schmidt ◽  
Alexander Argyros ◽  
Fabien Sorin
Keyword(s):  
Optical Fibers ◽  
Photonic Devices

scholarly journals Optical Properties of the Self-Assembling Polymeric Colloidal Systems

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Alexandra Mocanu ◽  
Edina Rusen ◽  
Aurel Diacon
Keyword(s):  
Optical Fibers ◽  
Optical Materials ◽  
Polymeric Materials ◽  
Cost Effective ◽  
Emerging Technology ◽  
Medical Applications ◽  
Colloidal Systems ◽  
Self Assembling ◽  
Intensity Control ◽  
Polymeric Optical Fibers

In the last decade, optical materials have gained much interest due to the high number of possible applications involving path or intensity control and filtering of light. The continuous emerging technology in the field of electrooptical devices or medical applications allowed the development of new innovative cost effective processes to obtain optical materials suited for future applications such as hybrid/polymeric solar cells, lasers, polymeric optical fibers, and chemo- and biosensing devices. Considering the above, the aim of this review is to present recent studies in the field of photonic crystals involving the use of polymeric materials.

scholarly journals A Review of Coating Materials Used to Improve the Performance of Optical Fiber Sensors

Sensors ◽  
2020 ◽  
Vol 20 (15) ◽  
pp. 4215
Author(s):  
Changxu Li ◽  
Wenlong Yang ◽  
Min Wang ◽  
Xiaoyang Yu ◽  
Jianying Fan ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Optical Materials ◽  
Rapid Development ◽  
High Sensitivity ◽  
Optical Fiber Sensors ◽  
Coating Materials ◽  
Fiber Sensors ◽  
Specific Recognition ◽  
Thermal Expansion Coefficients

In order to improve the performance of fiber sensors and fully tap the potential of optical fiber sensors, various optical materials have been selectively coated on optical fiber sensors under the background of the rapid development of various optical materials. On the basis of retaining the original characteristics of the optical fiber sensors, the coated sensors are endowed with new characteristics, such as high sensitivity, strong structure, and specific recognition. Many materials with a large thermal optical coefficient and thermal expansion coefficients are applied to optical fibers, and the temperature sensitivities are improved several times after coating. At the same time, fiber sensors have more intelligent sensing capabilities when coated with specific recognition materials. The same/different kinds of materials combined with the same/different fiber structures can produce different measurements, which is interesting. This paper summarizes and compares the fiber sensors treated by different coating materials.

Infrared Optical Materials: Where Do We Stand?

MRS Bulletin ◽  
1986 ◽  
Vol 11 (3) ◽  
pp. 41-45 ◽  
Author(s):  
Paul Klocek
Keyword(s):  
Optical Fibers ◽  
Optical Materials ◽  
Light Propagation ◽  
Brillouin Scattering ◽  
Critical Role ◽  
High Energy ◽  
Ir Radiation ◽  
Fundamental Limits ◽  
Intrinsic Attenuation ◽  
Energy Laser

The usefulness of infrared (IR) radiation has been recognized for many years and is today the basisof an expanding technology. The development of the laser, particularly the IR laser, has further fueled this technology expansion. Optical materials have always played a critical role in IR technology, primarily as transmissive and reflective optical components. Often, the lack Of an adequate IR optical material has delayed the implementation of applications Until appropriate materials or quality of materials were developed. While the developed material may satisfy the basic requirements of the application, often its other physical properties and/or cost are not desirable. The limited number of IR optical materials combined with the growing humber of applications has kept their development essential to our technological growth.This paper reviews some current research and developmen t trend s in IR optical materials primarily for transmissive components. These IR components include geometric optics, windows and domes, optical fibers, high energy laser optics, and coatings. The emphasis is on optical materials for applications involving wavelengths in the 2-14 μm region.Intrinsic AttenuationIntrinsic attenuation defines the fundamental limits to light propagation in a transmissive material. It is composed of electronic or bandgap absorption, lattice vibration or multiphonon absorption, and Rayleigh and Brillouin scattering. Bandgap absorption results from the promotion of an electron from the valence to the conduction band by direct absorption of a photon or indirectly involving a phonon and the appropriate change in k-vector. The onset of absorption occurs at photon energies greater than or equal to the bandgap.

Sign in / Sign up

Export Citation Format

Share Document