Comparison of Semiconductor Optical Amplifier and Discrete Raman Amplifier Performance in DWDM Systems

Realization of dense bidirectional spectrum sliced WDM-PON access system

“…In the simulation model it was decided to set all geometrical and material parameters for the active layer of the SOA as it was used previously in [16]. There these parameters were set as in a standard InGaAlAs travelling wave SOA with negligible residual facet reflectivity.…”

“…Therefore, on the output of SOA amplitude difference between intensity drops and peaks will not be so large when signal is observed in time domain, and obtained optical radiation will be more similar to the output of continuous wavelength lasers, which are normally used as carriers in cases when external optical signal intensity modulation is used [16,17]. More descriptive explanation will be shown in the "Results and Discussions" section.…”

“…Semiconductor optical amplifiers are the type of amplifiers in which electrical energy is applied as a pump to achieve population inversion in the active region, and amplification is achieved via the process of stimulated recombination luminescence [16]. At a certain point, when the intensity of the input optical signal increases, the whole carrier population of the upper energy level is occupied by the process of amplification.…”

Investigation of 40 Gbps DWDM Optical System by using Hybrid Optical Amplifier with Different Modulation Formats

“…Hybrid amplifier provides high power gain. In literature review, compare the performance of DRA-EDFA, DRA-SOA hybrid optical amplifier in DWDM systems and finds DRA-EDFA yields a better result on the basis of eye diagram [1]. Comparison of different hybrid optical amplifier(EDFA-RAMAN, RAMAN SOA, EDFA-SOA) on the basis of Qfactor, bit-error rate, output power at different distances and finds EDFA-RAMAN provides a better result than other hybrid amplifier [2].…”

Impact of cascaded MRRs on all-optical clock recovery from 40 Gbit/s RZ-OOK signal

“…Nevertheless also active device for optical clock recovery followed by SOA has been shown [6]. The main reason for the active device implementation after clock extraction is to minimize the patterning effects [19]. The SOA is utilized as amplitude equalizer for extracted optical clock which was recently demonstrated for wide range and multi-channel operation in combination with MRRs [20,21].…”