The processing of optical signals in the domain is an important issue resulting from desire to take advantage full bandwidth fiber. In this paper, we present detailed investigations on a device, which utilizes semiconductor laser amplifier loop mirror configuration (SLALOM). Different modes operation are reported like nonlinear single pulse switching and two-pulse at different speeds (1-100 Gb/s). Furthermore, number applications SLALOM photonic systems, shaping, decoding, retiming...

By combining the techniques of optical TDM with polarisation multiplexing and DQPSK modulation format, 240 km transmission 1.28 Tbit/s 160 2.56 has been performed in a single wavelength channel.

Fiber loop optical buffers enable data storage for discrete time intervals and therefore appear suitable applications in asynchronous transfer mode (OATM)-based networks where are transmitted cells of fixed length. In this paper, the feasibility limitations a fiber buffer studied theoretically experimentally, A model buffer, incorporating semiconductor laser amplifiers (SLA) as switching gates, is described. The two major interfering quantities cross talk amplified spontaneous emission SLA...

This paper reviews ultrahigh-speed data transmission in optical fibers based on time division multiplexing (OTDM) technology. Optical signal processing the transmitter and receiver as well requirements over a fiber link are discussed. Finally, results of several OTDM-transmission experiments, including 160-Gb/s 4320 km, 1.28-Tb/s 240 2.56-Tb/s 160-km link, described

Resonant grating–waveguide structures formed with InP/InGaAsP semiconductor materials were tested to show light modulation at a wavelength of 1.55 μm. Narrow, subnanometer resonant spectral bandwidths and ratio reflected intensities between resonance away from greater than 50 measured. For structure an area 3 mm × mm, the frequency reached 5 MHz.

Four-wave-mixing based on ultrafast nonlinear gain dynamics in a semiconductor laser amplifier was applied for wavelength conversion of 10-channel OFDM signal with channel spacing 9 GHz and modulation rate 140 Mb/s per channel. Conversion over 275 realised. BER measurements revealed no severe system degradation due to polarisation fluctuations or cross-talk.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

A new method of optical frequency conversion is described and demonstrated by a 140 Mbit/s DPSK transmission experiment. modulated input signal converted 1500 GHz in output with fibre-to-fibre efficiency −10dB.

The phase dynamics that occur in bulk InGaAsP-InP semiconductor optical amplifiers (SOAs) response to picosecond pulse excitations at 10 and 40 GHz are studied experimentally numerically for various amplifier lengths. time dependencies of the changes absolute gain measured simultaneously. total shifts induced by 1.5-ps pulses higher than π SOAs with active region lengths between 0.5 2 mm exceed 2π a 1.5-mm-long amplifier. Phase above 1.5- 2-mm-long SOAs. dependence shift on bias current...

We have investigated three interferometric all-optical switches based on cross-phase modulation (XPM) in semiconductor optical amplifiers (SOAs), the laser amplifier a loop mirror (SLALOM) switch, Mach-Zehnder interferometer (MZI) and ultrafast nonlinear (UNI) switch. Switching windows with different widths are measured under similar conditions for all switching configurations. introduce integrated contrast ratio (ICR) as measure to evaluate performance of switch from windows. Using ICR,...

We report on an all-optical interferometric optical time-division multiplexing switch that exhibits high linearity, high-switching contrast, low noise, wide bandwidth, and crosstalk. The key element of the gain-transparent is a semiconductor amplifier (SOA), which transparent for data signal. However, injection control pulses in gain wavelength region SOA leads to index modulations at data. This variation refractive can be used switching. In application as add/drop multiplexer, has inherent...

The authors demonstrate all-optical error-free demultiplexing of 10, 20 and 40 Gbit/s to 5 data signals by using a monolithically integrated Mach-Zehnder interferometer with two semiconductor laser amplifiers.

Clock recovery from a 160 Gbit/s data signal is demonstrated using bidirectionally operated electroabsorption modulator (EAM) as phase comparator. Employing differential detection scheme, excellent locking stability achieved. The recovered clock allows error-free transmission.

The properties of a semiconductor laser amplifier as optical switching gate are investigated. Particular attention is paid to gain, contrast ratio, and time the device. These studied experimentally theoretically with respect injection current, input power, cavity resonances. experimental arrangements theoretical method described. As an example various applications gates, packet experiments self-routing, employing cascaded reported. In analysis restrictions that gates impose on larger system...

We report on a broad-band all-optical switch that exhibits high linearity (>30 dB), switching contrast (>25 and large data wavelength tunability (100 nm). The principle is based four-wave mixing. Two control pulse trains are placed in the gain region of 1300-nm semiconductor-optical amplifier. signal, however, at 1550 nm transparent where mixing sidebands generated due to index modulations. used sample 160-Gb/s signal with temporal resolution approximately 1.7 ps.

We report on an all-optical demultiplexer based gain-transparent operation of a semiconductor optical amplifier (SOA) in ultrafast-nonlinear interferometer (GT-UNI). The GT-UNI comprises robust fiber-chip setup folded geometry. For switching window widths 5.2 ps and 6.0 ps, error-free demultiplexing 160-10 Gb/s is demonstrated.

Experimental results are presented confirming that optical-phase conjugation in a semiconductor-laser amplifier has the potential to compensate for interplay of chromatic dispersion and nonlinear self-phase modulation, thereby enabling high-capacity high-power transmission over standard singlemode fibres.

A fiber-based, wavelength-shift free 3R-regenerating repeater was operated at 160 Gbit/s in a dispersion-managed fiber link for the first time. Error OTDM transmission over 186 km demonstrated.

Clock recovery from optical time division multiplexed data signals up to 160 Gbit/s is experimentally demonstrated using a phase-locked loop with semiconductor amplifier in mirror as fast phase comparator. The timing jitter of the clock pulse extracted signal was < 0.3 ps.

A novel, purely optical technique for demultiplexing high speed time-division multiplexed data is demonstrated. The uses the SLALOM (semiconductor laser amplifier in a loop mirror). rate not limited by gain recovery time of semiconductor amplifier. same can also be used multiplexing.

A 40 Gbit/s time-division multiplexed signal was demultiplexed to 10 using a single modelocked semiconductor laser as the clock source. The pulses of directly control an all-optical switch for demultiplexing.

An advanced time-domain dynamical model for the investigation of semiconductor optical amplifiers (SOA) is presented. The accounts ultrafast gain dynamics, saturation and spectral profile. It also suitable analyzing amplifier in a system environment. As an example used to investigate dynamics SOA as well characteristics interferometer switch laser loop mirror (SLALOM). Good agreement between modeling experiment shown. can be applied other optically time-division multiplexed (OTDM) applications, too.

This paper deals with a general problem concerning semiconductor-laser amplifiers used for frequency conversion. The amplified spontaneous emission (ASE) of saturated amplifier is investigated experimentally and theoretically. An analytical solution accounting the spatial dependence inversion parameter as well spectral ASE derived. Hence, results can be applied to arbitrary saturation conditions shifts. Our theory converters based on four-wave mixing found in good agreement both numerical...

The authors report an all-optical add-drop multiplexer based on gain-transparent operation of a semiconductor optical amplifier in novel geometry. Error-free at 160 Gbit/s is demonstrated for all channels.

The authors report the first 160 Gbit/s RZ transmission experiment over field-installed standard fibre G.652 with optical to 40 demultiplexing (OTDM) and subsequent electrical signal processing (ETDM) compare these results 10 OTDM experiments.