Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 8 of 8 for “"Thermo-optic coefficient"”.
-
Determination of thermo-optic coefficient for B2O3 and GeO2 co-doped optical silica fiber
… understand the influence of B2O3 and GeO2 on the thermo-optic coefficient (TOC) of silica optical fiber. This is important since understanding the contributions to the TOC by these constituents can provide insight into the way to lower the positive-valued TOC of SiO2, which is a potential method …
-
Design of a CMOS compatible, athermal, optical waveguide
… possible design for a CMOS compatible, athermal, optical waveguide. The design explored is a slot waveguide with light guided in the low index material. A design paradigm is proposed which shows the relationship between cross-sectional parameters and their impact on both the effective index of …
-
Optical signal generation, stabilization, and manipulation in broadband silicon photonics
… issues are addressed by investigating the thermo-optic characteristics of various CMOS-compatible media. Negative thermo-optic coefficient of titanium dioxide is utilized to compensate for the all-positive thermal index shifts in the Si/SiN waveguide platform. An athermal resonator with …
-
Simultaneous measurement of strain and temperature using liquid core optical fiber sensors
… core fiber sensor is comprised of a hollow core optical fiber filled with a liquid of a known index of refraction which is slightly higher than that of the silica tube which acts as the cladding. The refractive index fluid is chosen such that the variation of its refractive index with strain and …
-
The design and application of polymeric materials in a novel light modulated accelerometer.
… the development of the accelerometer the stress-optic and thermo-optic coefficients have been determined for a range of polymeric materials.The stress optic coefficient was determined for polycarbonate, polymethyl methacrylate, polvinyl chloride and araldite epoxy resin using a circular …
-
Nonlinear photonics with applications in lightwave communications
… applications. Different highly nonlinear optical materials have been considered for the investigation of Lightwave communications data carriers, with a focus on the optical carrier pulsewidth. A state-of-the-art novel method has been developed to measure pico-second optical carrier pulses …
-
Measuring Nonlinear Properties of Graphene Thin Films Using Z-Scan Technique
… refractive index (n2), nonlinear absorption coefficient (β), and thermo-optic coefficient (dn/dT), which are dependent on the laser power and temperature of graphene thin film materials. Many techniques have been used for measuring the nonlinear parameters, and the Z-scan method has been …
-
Experiments on the Thermal, Electrical, and Plasmonic Properties of Nanostructured Materials
… to enhancement for the electrical, thermal, and optical properties of materials. The work presented in this dissertation details fabrication and characterization techniques of thin films and nanoparticles for these purposes. The four primary areas of research presented here are thermoelectric …