This paper proposes a semiconductor optical amplifier (SOA)-based multilevel polarization shift on–off keying (MPS-OOK) transmission for free-space (FSO) communication. At the transmitter end, MPS-OOK signal is modulated with constant linear state of (SOP) at high-intensity level and various SOPs low-intensity in order to improve spectral efficiency (SE) transmitted power efficiency. receiver f...

This paper demonstrates the comparison of 40 Gbps DWDM system using hybrid optical amplifier configurations (EDFA-EDFA and EDFA-SOA ) are implemented with RZ and NRZ encoding techniques at various distance along with DCF having dispersion 80 ps/nm/Km . DWDM systems with 4 channels each having a bit rate of 10 Gbps and 0.8 nm equal channel spacing. The performance of EDFA-EDFA and EDFA-SOA hybri...

The feasibility of employing a delay interferometer (DI) to compensate for the pattern effect that manifests in a stand-alone semiconductor optical amplifier (SOA) when it is driven by return-to-zero (RZ) data being faster than its dynamic response is theoretically investigated and demonstrated. This is achieved by means of a numerical model applied to simulate and correlate the operation of th...

Abstract We report a low-cost manufacturing approach for fabricating monolithic multi-wavelength sources dense wavelength division multiplexing (DWDM) systems that offers high yield and eliminates crystal regrowth selective area epitaxy steps are essential in traditional fabrication methods. The source integrates an array of distributed feedback (DFB) lasers with passive coupler semiconductor o...

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. ...

A simulation performance analysis of a semiconductor optical amplifier Mach–Zehnder interferometer (SOA-MZI) sampling mixer used as frequency down converter is presented by employing differential modulation and switching architectures. clock pulse signal, generating 2 ps-width pulses at 13 GHz, signal. Two carriers, intensity-modulated sinusoidal signal 79 80 GHz are simultaneously converted to...

In this paper the transmission performance of 32 × 10 Gbps with 0.8 nm channel spacing dense wavelength division multiplexed system using hybrid optical amplifiers (RAMAN-EDFA, RAMAN-SOA AND EDFA-SOA) has been investigated. The performance has been compared at different distances and has been evaluated on the basis of Quality factor, optical output power, bit error rate and average eye opening....

Abstract A fiber Bragg grating (FBG) sensor system using a fiber ring laser with a hybrid amplifier is proposed and demonstrated. The hybrid amplifier comprises an erbium doped waveguide amplifier and a semiconductor optical amplifier. The experiment shows that such the hybrid amplifier has a high amplifier spontaneous emission power and gain spectrum. Moreover, this fiber ring laser can provid...

Repetition-rate multiplication has been shown by use of a fiber ring oscillator with a semiconductor optical amplifier as the gain medium and by use of fast saturation and recovery of the amplifier from an external optical pulse train. Repetition-frequency multiplication up to 6 times and up to 34.68-GHz frequency have been achieved.

We present a 1 2 all-optical packet switch. All the processing of the header information is carried out in the optical domain. The optical headers are recognized by employing the two-pulse correlation principle in a semiconductor laser amplifier in loop optical mirror (SLALOM) configuration. The processed header information is stored in an optical flip-flop memory that is based on a symmetric c...