To develop high nonlinear optical fibers for all-optical switching applications, 7.5 wt% AgNO3 was incorporated into
tellurite glasses with composition of
75TeO2-20ZnO-5Na2CO3 (TZN75) under precisely-controlled experimental
conditions to form 7.5Ag-TZN75 glass. Surface Plasmon resonance absorption peak of Ag nanocrystals embedded in
7.5Ag-TZN75 glass was found to center at 552 nm. By degenerated
four-wave mixing method, the non-resonant
nonlinear refractive index, n2, of 7.5Ag-TZN75 glass was measured to be 7.54×10-19 m2•W-1 at 1500 nm, about 3 times of
the reference TZN75 glass without any dopant and 27 times of the silicate glasses and fibers, and the response time is
about 1 picosecond.
Recent progress in development and nonlinear optical device application of germano-silicate optical fibers incorporated
with noble metal nanoparticles are presented. Novel macro-optical properties, such as linear absorption, resonant optical
nonlinearity, and optical limiting properties of the fibers fabricated by modified chemical vapor deposition and solution
doping techniques are experimentally and theoretically demonstrated based on surface plasmon resonance effect and
nonlinear confinement of the noble metal nanoparticles. Applications of the fibers for all-optical signal gating with the
cascaded long period gratings and for a new method to determine the third-order susceptibility of optical fibers are
discussed.
We propose a novel approach for resolving temperature and strain variations by use of Sagnac interferometer incorporating
two types of high birefringence fibers (HBFs) and a polarization controller. The two types of HBFs are spliced
together to act as the sensing head for temperature and strain discrimination. The detected parameters are two wavelength
dips over a broad wavelength range in the transmission spectrum of the Sagnac interferometer, whose sensitivity
responses to temperature and strain both depend on those of the two HBFs. As a result, the sensitivity responses can be
controlled by adjusting the polarization controller adjacent to the sensing head to shift the wavelength dips and then
change their degrees of dependence on the two HBFs.
To investigate the nonlinear optical properties of metallic nanoparticles in dielectric composite materials, germano-silicate glass optical fibers incorporated with gold nanoparticles were made by using modified chemical vapor deposition technique and solution doping process. The incorporation of the gold nanoparticles was confirmed by the sharp absorption peak appeared near 498.4nm, which was due to the surface plasmon resonance absorption of Au nanoparticles. Resonant optical nonlinearities of the fibers were estimated by measuring the peak shift of the fringes obtained from the long-period fiber grating pair upon pumping with Argon laser at 488nm. The resonant nonlinearity was found to be 5.00×10-16m2/W by the incorporation of the gold metal concentration and with the addition of Al3+ ions.
To investigate the nonlinear optical properties of metallic nanoparticles in dielectric composite
materials, germano-silicate glass optical fibers incorporated with gold nanoparticles were made by
using modified chemical vapor deposition technique and solution doping process. The incorporation
of the gold nanoparticles was confirmed by the sharp absorption peak appeared near 498.4nm, which
was due to the surface plamon resonance absorption of Au nanoparticles. Resonant optical
nonlinearities of the fibers were estimated by measuring the peak shift of the fringes obtained from
the long-period fiber grating pair upon pumping with Argon laser at 488nm. The resonant nonlinearity
was found to be 5.00x10-16m2/W by the incorporation of the gold metal concentration and with the addition of Al3+ ions.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.