We present a novel direct space-to-time pulse shaper, operating in the 1.5m optical communications band which enables generation of continuous optical pulse sequences at a rate of 100GHz. The apparatus includes several novel features, such as the use of a diffractive optical element for spatial patterning, fiber coupled input/output, and a telescopic configuration which collectively enable gene...

A single femtosecond optical frequency comb is implemented to induce two-photon transitions between molecular vibrational levels to form ultracold molecules. The phase across an individual pulse in the pulse train is sinusoidally modulated with a carefully chosen modulation amplitude and frequency. Piecewise population transfer is fulfilled to the final state by each pulse in the applied pulse ...

For a general class of constant-energy trellis-coded modulation schemes with 2 states, necessary and suÆcient conditions to guarantee that a maximumlikelihood sequence estimator can decode each symbol with a xed delay of symbols are derived. Additive white Gaussian noise is assumed. MSK is a special case that belongs to the family of modulation schemes with = 1. It is shown that when these cond...

This paper focuses on hybrid H-bridge cascaded MLI using two equal dc sources in order to produce a five-level output. The proposed topology reduces the number of dc sources and switching elements. This paper emphasis on various inverted sine carrier PWM (ISCPWM) techniques with equal amplitude and unequal amplitude carriers. The inverted sine carrier pulse width modulation (ISCPWM) technique e...

We propose the adaptive minimum symbol-error rate algorithm, which is a low-complexity technique for adapting the coefficients of a linear equalizer in systems using pulse-amplitude or quadrature-amplitude modulation. The proposed algorithm very nearly minimizes error probability in white Gaussian noise and can significantly outperform the minimum-mean-squared error equalizer (by as much as 16 ...

A new linearization method for optical transmitters based on directly modulated lasers (DMLs), named the Stretched method, was proposed in Parts I and II of this work. presented theoretical framework non-return-to-zero (NRZ) modulation related detailed simulation experimental results. Here, we extend to pulse amplitude schemes (PAM). Focussing 4-level PAM (PAM-4), present background discuss imp...

This paper presents exemplary exercise on the fundamentals of signal processing course which is offered for second year bachelor level students. Application Field Programmable Analog Array (FPAA) pulse amplitude modulation (PAM) described with laboratory. There are presented two methods implementing PAM and demodulation technique in FPAA module. Example configuration files available form Author...

The influence of phase-modulation on femtosecond time-resolved coherent Raman scattering is investigated theoretically and experimentally. The coherent Raman signal taken as a function of the spectral position shows unexpected temporal oscillations close to time zero. A theoretical analysis of the coherent Raman scattering process indicates that the femtosecond fight pulses are amplitude and ph...