Publications

355 Binary pulse transmission by various methods of carrier modulation has been dealt with elsewhere on the premise of ideal amplitude and phase characteristics of the carrier channels.

Characteristics of Pulse Width Modulation (PWM) were studied to provide an analog communication alternative in fiber optic links to the predominantly digital techniques presently used.

We report generation of 50-Gb/s RZ-DQPSK signal, without an external pulse carver, using an electroabsorption modulators-based hybrid modulator.

We show that strong overlap of adjacent pulses in dispersion-managed RZ transmission reduces pulse-to-pulse interaction and the timing jitter.

Directly modulated semiconductor lasers exhibit periodic dynamic frequency shift or chirping due to gain-induced variations of the refractive index.

The terminal equipment for a 24-telephone channel duplex p.t.m. relay system is described for use on a transmission bandwidth of 2.8 Mc/s.

An experimental system operating on frequencies in the range 1 200-1 400 Mc/s with pulse modulation is described.

Bloomfield, Geusic, Freeman and Brown have used the Smalley synchronized laser and supersonic quenching carrier gas pulsed method to obtain spectra for Ge(n)(+) similar to pulsed spectra obtained p

The use of the optoacoustic effect to measure pulsed laser absorption is discussed with emphasis on applications to spectroscopy, dynamics, and energetics of absorbed species.

A method which relies on no reference absorber to deduce yields for heat deposition following pulsed laser irradiation is described.