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A novel type of hybrid amplifier/wavelength converter is presented, coupling a TDFA and a FOPA module in series. Signal amplification over the entire S-Band (1450-1530 nm) and signal-to-idler conversion from 1540-1630 nm is demonstrated.
Two-beam pumped noncollinear PPKTP OPO generating two signal waves with tunable spectral separation is demonstrated. The coherent pumping leads to a parametric gain grating which resonantly enhances cascaded sideband generation by the second-order nonlinear interaction.
We demonstrate an extreme chirped pulse modelocked laser, simultaneously generating near-transform-limited 3.9 ps optical pulses and 510 ps linearly chirped output. The design overcomes fundamental limitations of energy extraction and nonlinearities induced by gain dynamics.
We have demonstrated a polarization-interleaved WDM system with a two-orthogonal-pump OPA (2OP-OPA). The sensitivity has been improved by about 2 dB compared to its counterpart with all WDM channels co-polarized with the same signal gain.
We propose a novel design for making the gain of single-pump, fiber-optic parametric amplifiers polarization independent. We show that under suitable conditions, signal gain varies by < 0.1 dB as its polarization varies.
Third order cascaded Raman shifting is used to generate light to 1867 nm in sulfide fibers, and the nonlinearity is measured to be ~5.7 times 10-12 (m/W). Damage at ~1 GW/cm2 limits the wavelength shift range.
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 demonstrate engineered refractive index profiles for the mitigation of nonlinear optical impairments such as stimulated Raman scattering and stimulated Brillouin scattering. These fibers offer performance improvements over conventionally used large mode area fibers.
We demonstrate the generation of near-Fourier-limited 9.8 plusmn 0.3 fs laser pulses with an intensity exceeding a terawatt at 30 Hz repetition rate, using noncollinear optical parametric chirped pulse amplification. Amplified fluorescence is kept below 1%.
We use phase-matched four-wave mixing in appropriately designed silicon waveguides to demonstrate amplification over a 29 nm range and efficient wavelength conversion in the range from 1511 nm to 1591 nm.
An ultrabroad infrared continuum can be produced using optical parametric generation (OPG) in quasi-phasematched GaAs. Spectra over an octave wide, spanning 4.5 to 10.7 microns, measured 20 dB down from the peak, have been observed.
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.
An analytic model of chirped-pulse amplification is presented. The model is used to optimize the peak power in fiber chirped-pulse amplification, in which the interplay of nonlinearity and third-order dispersion plays a major role.
Effect of cross-gain-modulating power and wavelength on a reshaped-optical-clock injected SOA at 10 Gbit/s is investigated to achieve pulsed data-pattern transformation with highest extinction ratio of 14.8 dB at input data power of -10 dBm under a modulating power of 17.9 dBm at 1550 nm.
We demonstrate all-optical tunable delays as long as 4 ps in a silicon-on-insulator waveguide using stimulated Raman scattering, which represents an important step towards implementing optically tunable dispersion in small-scale photonic devices.
We demonstrate operation of an optical parametric amplifier using a chirped quasi-phase-matching grating. Such devices enable engineering of gain spectra over wide bandwidths, applicable to femtosecond pulse amplification and other wide-band devices.
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