In these lectures 1 we dwell upon the cosmological cornerstones of the Very Early Universe (VEU) theory: Parametric Amplification Effect (PAE) responsible for the generation of Pri

In new optical pulse generator using delayedinterference-signal-wavelength-converter (DISC)-type all-optical gate, we injected sinusoidally modulated light to ring cavity. With this way, externally modulated laser oscillation and mode-locked pulse laser oscillation occurred. These generated pulse’s widths and repetition frequencies are 27 ps, 10.5 GHz and 2.1 ps, 10.5 GHz, respectively. Keyword...

In terminals for free-space laser links, optical amplifiers boost transmit powers into the Watt range. As pre-amplifiers, they help obtaining sensitivities of a few ten photons/bit. Concepts and requirements for such applications are discussed. ©2005 Optical Society of America OCIS codes: (060.4510) Optical communications; (250.4480) Optical amplifiers

Optical network based on wavelength-division-multiplexing (WDM) technology will be a most active research topic in the 21st century. This paper describes a WDM multiple-wavelength transmitter and several key corresponding devices for optical network, including ASE spectrum-sliced multiplewavelength optical source, optical add/drop multiplexer (OADM), semiconductor optical amplifier (SOA), as we...

. Various problems associated with receivers for laser radars were investigated experimentally and theoretically. The spontaneous emissionpower of a laser amplifier was calculated theoretically pnd compared with the experimental results obtained fror^ a ruby laser amplifier. A high gain single pass xenon gas laser amplifier was constructed with a net gain of 48 dB/m at 3.5 |Ji, The 3.39 p. line...

We study numerically the formation of cascading solitons when femtosecond optical pulses are launched into a fiber amplifier with less energy than required to form a soliton of equal duration. As the pulse is amplified, cascaded fundamental solitons are created at different distances, without soliton fission, as each fundamental soliton moves outside the gain bandwidth through the Raman-induced...

We present a broadband optical parametric amplifier design using tapered gain and tandem chirped quasi-phase-matching gratings to obtain flat gain and group-delay spectra suitable for applications such as ultrashort-pulse amplification and fiber-optic communication systems. Although a tapered-gain amplifier consisting of a single chirped grating can provide constant gain over a wide frequency r...

LUDWIG, R., P I E P ~ , w., and WEBER, H. G.: ‘Photonic ATM switching with semiconductor laser amplifier gates’, Electron. Lett., 1992, 28, (15), pp. 1438-1439 SAXTOFT, c.: ‘Photonic packet switch experiment employing a 2 t 2 switch matrix and a semiconductor laser amplifier’. Proc. Photonic Switching Topical Meeting, Kobe, Japan, 1990, Postdeadline Paper 14B-7 4 FORTENBERRV, R. M., LOWERY, A. ...

We experimentally and theoretically investigate the influence of pump depletion effects on extreme statistics observed in fiber Raman amplifiers. We also report on the impact of the dispersion of the fiber. OCIS codes: (060.4370) Nonlinear optics, fibers; (060.2320) Fiber optics amplifiers.