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Microbending effects in singlemode optical fibers: investigation and novel applications
(Virginia Tech, 1994-12-04)
<p>Microbends are axial distortions on the optical fiber that have a spatial wavelength small
enough to effect coupling between guided and radiation or cladding modes. The
magnitude of this wavelength-dependent coupling ...
Sapphire optical fiber sensors
(Virginia Tech, 1991-05-05)
<p>Fiber optic sensors offer many advantages over conventional sensors,
including; small size, low weight, high strength and durability. Standard silica
optical fibers are limited by the material properties of silica. ...
Concentric-core optical fiber sensors
(Virginia Polytechnic Institute and State University, 1986)
This thesis describes the implementation of a mechanical strain sensor which uses concentric core optical fiber waveguide as the sensing element. When this particular type of fiber is strained, a transfer of optical power ...
Soliton Propagation in nonlinear optical fibers: theory and application
(Virginia Tech, 1987-12-17)
<p>A survey of research in nonlinear optical fibers is given. Important background concepts are
introduced and explained. Present and future applications of nonlinear optical fibers arc reviewed. A mathematical model of ...
Temperature corrected strain measurements using optical time domain reflectometry
(Virginia Tech, 1990-05-12)
<p>A method of using optical fiber to measure strain and
correct for the effects of temperature is proposed. A means
of measuring apparent strain is given, pure temperature is
measured using Fresnel-backscatter based Optical ...
Overview of fiber optics technology: industrial and military
(Virginia Tech, 1989-03-05)
Fiber optics technology is being used in many applications, both in
the military world and in the industrial world. A broad overview of
this technology is provided, including a discussion of the fundamentals
of fiber ...
High resolution optical time domain reflectometry and its applications
(Virginia Polytechnic Institute and State University, 1988-01-15)
High resolution Optical Time Domain Reflectometry (OTDR) measurements have recently allowed spatial resolutions of less than one millimeter. These capabilities indicate that OTDR techniques may be suitable for non-conventional ...
Photoinduced, refractive-index gratings in germanium-doped two-mode, elliptical-core optical fibers
(Virginia Tech, 1991-11-15)
<p>Permanent, photoinduced refractive-index gratings written along the longitudinal axis of
germanium-doped, two-mode, elliptical-core fibers are found to affect the differential phase
modulation between the co-propagating ...
Chromatic dispersion measurement in single-mode optical fibers by acousto-optic modulation and phase detection
(Virginia Polytechnic Institute and State University, 1986)
A system to measure chromatic dispersion in single-mode optical fibers with near point wavelength resolution is described. Differential propagation constant data for the test fiber is collected by using an acousto-optic ...
Improvements in fiber optic coupler fabrication techniques
(Virginia Tech, 1994)
A novel coupler measurement station and technique for manufacturing fused biconical tapered multi-port multimode couplers with improved uniformity among ports is presented. Improvement in the uniformity of the couplers is ...