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We experimentally demonstrate the transformation of 42.7-Gb/s optical differential-phase-shift-keyed signals into high-quality duobinary signals by optical filtering in an athermal delay-interferometer (DI) filter. The resulting duobinary signals have good back-to-back performance and show high tolerance to chromatic dispersion and concatenated optical filtering. The repetitive passbands of the DI...
A 40 Gb/s duobinary and modified duobinary transmitter based on an optical one-bit-delay interferometer was demonstrated experimentally. Good back-to-back performance was obtained with this transmitter
Summary form only given. Infrared-visible sum-frequency generation (SFG) has been proven to be a powerful probe for vibrational spectroscopic investigation of surfaces and interfaces. It is highly surface specific and has a submonolayer sensitivity. As a nonlinear optical process, SFG puts a premium on high input beam intensities. One would therefore like to employ input pulses as short as possible...
Summary form only given. Surface vibrational spectroscopy via infrared-visible sum-frequency generation (SFG) has been developed into a powerful tool to study the structures of surfaces and interfaces. It is based on the principle that SFG is forbidden under electric-dipole approximation in a medium with inversion symmetry, but necessarily allowed at a surface or interface where the inversion symmetry...
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