Communications
Increasing Bandwidth
of Fiber Optic Telecommunications Networks
Applications: High-speed fiber
optics telecommunications
Project Description: Characterize
spectral broadening, group velocity dispersion (GVD), polarization
mode degeneration, and nonlinear processes in optical fibers.
Nonlinear optical processes studied include self-phase modulation
(SPM), cross-phase modulation (XPM) and four-wave mixing (FWM).
- Nonlinear Fiber Optics and Devices: Study
nonlinear processes in optical fibers and nonlinear optical
materials.
- Ultrafast Optical Switches: Investigate
and develop multi-layer silicon-germanium structures on
silicon on an insulator waveguide.
- Wavelength Multiplexing and other Structures:
Investigate and develop multi-layer silicon-germanium structures
on silicon on an insulator waveguide.
- Wideband Amplifiers: Investigate and develop
multi-layer silicon-germanium structures on silicon on an
insulator waveguide.
Benefits: Improvements in
optical communications, including increased bandwidth of fiber
telecommunications networks
Photodeposition of Porous
Claddings on Silica Fibers
Applications: Fiber optic temperature,
pressure and displacement sensors; switches; modulators
Project Description: Characterize
the morphology and porosity of porous silica claddings on
micron diameter optical fibers. Obtain optical micrographic
pictures of cladding morphology and surface roughness as measured
by atomic force microscopy. Determine the porosity of the
cladding by doping with Fe(CO)5 and examine photodeposition
in the fiber cladding.
Benefits: Very high-resolution
sensors and high-speed optical switches. Potential low cost
manufacturing technique.
Multiplexed Digital Video
Transmission System
Applications: Fiber optics
telecommunications
Project Description: Develop
a four-channel multiplexed digital video transmission system
to operate at data rates in excess of 1 Gbit per second. Two
versions are contemplated, one for operation at 1310 nanometers
and the other at 1550 nanometers. An eight-channel model is
also under development. This work builds on the successful
collaborative development of a single-mode NTSC video transmitter
Benefits: Low cost upgrade
to existing fiber optic telecommunications networks
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