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We present a new and very simple method for wavelength and line width measurement with a resolution in the femtometer range. The method is based on the narrow bandwidth of Brillouin scattering in optical fibers.
We show that the emergence of temporally stable component in SBS Stokes emission excited by CW monochromatic pump radiation in optical fiber is a manifestation of the phenomenon of spectral self-phase conjugation.
Conversion of cw light at 1.56 mum to Stokes wave was achieved with an efficiency of 27% using a 5-m-long As2Se3 chalcogenide fiber. Stokes shift and gain coefficient were 7.95 GHz and 6.08 times 10-9 m/W, respectively.
We report observation of enhanced correlation, wavelength shifting, and spectral broadening of the twin beams in a parametric amplification with a gain greater than 30 dB in a 1.7 m microstructure fiber.
We report the first demonstration of long period gratings in single mode As2Se3 chalcogenide glass fiber. The grating is subsequently used to detect what we believe is a weak, reversible photobleaching process.
The commonly used Lorentzian Raman response function does not properly account for the shoulder in the Raman gain spectrum originating from the Boson peak. We propose an accurate model for the Raman response in silica fibers.
Optimized cascading of HFs with shortening zero-dispersion wavelengths enabled generation of supercontinua with 1.4 W average power and significant components in the blue (10 dB) and UV from picosecond ytterbium pump sources in a totally fiber-integrated format.
We achieve > 98% coupling efficiency (18 dB) to a highly nonlinear chalcogenide glass photonic crystal membrane waveguide via evanescent coupling from a silica fibre nanowire.
By using a recently developed nonlinear fiber, we achieve octave-spanning spectrum directly from a diode-pumped passively mode-locked 250-fs Er:Yb:glass laser without any amplification stage. Applications for CEO phase stabilization and optical clocking are discussed.
We demonstrate a simple method to generate optical pulse train with tunable pulsewidth at 10 Gb/s using four-wave mixing in 1.9 m bismuth based highly nonlinear fiber.
We report on the excellent agreement of a first-principles, quantum dynamical simulation with the experimentally measured results of a fiber squeezer using intense, ultra-short laser pulses.
The photo-thermal effect describes the absorption of light and a change in grating characteristics via dn/dT, which can mask fast non-linear optical effects. The effect is characterized and a method to reduce it is demonstrated.
We generate ultrabroadband self-phase-stabilized near-IR pulses by difference-frequency generation of a hollow-fiber broadened supercontinuum followed by two-stage optical parametric amplification. Energies up to 20 muJ are demonstrated and a route for energy scaling is indicated.
We demonstrate an all fiber-based OTDM receiver incorporating clock recovery and demultiplexing functions using short lengths of bismuth oxide-based nonlinear fiber and erbium-doped bismuth oxide fiber. Error-free, overall operation is achieved at 80 Gbit/s and the clock recovery is also shown to be operable at 160 Gbit/s.
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