Performance Evaluation of Optical Amplifiers for High-Speed Optical Networks

Malik, Deepak; Kaushik, Geeta; Wason, Amit

doi:10.1515/joc-2017-0133

Cited by 8 publications

(3 citation statements)

References 14 publications

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“…The value of chromatic dispersion at the speed of 10 Gbit.s -1 is tolerated by NRZ to 1000 ps/nm/km, whereas for the speed of 40 Gbit.s -1 it is only 60 ps/nm/km. That implies that with the increase of transfer speed, dispersion compensation is necessary if not indispensable [20]. The other restriction is the requirement for OSNR which has to be larger by 6 dB (10 dB) for the 40 Gbit.s -1 (100 Gbit.s -1 ) receiver -if the original BER is to be maintained.…”

Section: Fusion Of Cwdm/dwdmmentioning

confidence: 99%

Untitled

2019

JESTR

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The continual increase in transfer capacity and speed leads to the continual improvement of fully optical transfer communication systems. The aim of this article is to present the creation of an 8-channel CWDM (Coarse Wavelength Division Multiplex) system (gap spacing of 20 nm), where 10 channels, with gaps of 2 nm are gradually inserted between wavelengths of 1530 nm to 1550 nm according to the ITU-T G.694.1 recommendation. This system is evaluated using the BER (Bit Error Rate) of a specific channel operating on a wavelength of 1540 nm. In the topology we used an EDFA (Erbium Doped Fibre Amplifier) placed In-Line at 90 km with a bit speed of 10 Gbit.s-1. Consequently, in order to overcome the problem of distance, an optical loop with an appropriate EDFA configuration was created. This article presents the basic mathematical description of bit error rate and also deals with the possibility of the incorporation of CWDM and DWDM systems into existing infrastructures.

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Section: Fusion Of Cwdm/dwdmmentioning

confidence: 99%

Untitled

2019

JESTR

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“…By utilizing its non-linear features, SOA could be utilized into a range of the optical applications such as optical routing, wavelength conversion, pulse compression, an optical-logic design, etc. [4,5]. SOAs are almost like semiconductor-lasers into which they need a gain area that is…”

Section: Introductionmentioning

confidence: 99%

Dynamics and its Effects on Saturation Region in Semiconductor Optical Amplifiers

Mohammed¹,

Jassem²

2021

IHJPAS

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We focus on studying the dynamics of bulk semiconductor optical amplifiers and their effects on the saturation region for short pulse that differ, however there is the same unsaturated gain for both dynamics. Parameters like current injection, fast dynamics present by carrier heating (CH), and spectra hole burning (SHB) are studied for regions that occur a response to certain dynamics. The behavior of the saturation region is found to be responsible for phenomena such as recovery time and chirp for the pulse under study.

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“…To resolve this issue, the operating bandwidth of optical components has to be improved. Among these, optical amplifiers have drawn great attention in recent years due to their numerous hybrid and integrated applications in optical networks 2 , silicon photonics 3 , all-optical switching 4 , and signal processing 5,6 , playing significant roles as amplifiers (preamplifiers, in-line amplifiers, and power boosters) 7–9 , wavelength converters 10–12 , modulators 13,14 , and all-optical logic gates 15 . Different types of optical amplifiers including solid-state 16 , doped fiber 17–19 , tapered 20 , Raman 21,22 , parametric 23–26 , and semiconductor optical amplifiers (SOAs) 27–31 have been investigated for various output optical spectra.…”

Section: Introductionmentioning

confidence: 99%

Ultra-broadband Optical Gain Engineering in Solution-processed QD-SOA Based on Superimposed Quantum Structure

Yousefabad

Matloub

Rostami

2019

Sci Rep

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In this work, the optical gain engineering of an ultra-broadband InGaAs/AlAs solution-processed quantum dot (QD) semiconductor optical amplifier using superimposed quantum structure is investigated. The basic unit in the proposed structure (QDs) is designed and fabricated using solution-processed methods with considerable cost-effectiveness, fabrication ease, and QDs size tunability up to various limits (0.1 nm up to the desired values), considering suitable synthesis methods. Increasing the number of QDs, the device can span more than 1.02 μm (O, C, S, and L bands) using only one type of material for all QDs, and is not restricted to this limit in case of using more QD groups. Also, it can manipulate the optical gain peak value, spectral coverage, and resonant energy for customized optical windows, among which 1.31 μm and 1.55 μm are simulated as widely-applicable cases for model validation. This makes the device a prominent candidate for ultra-wide-bandwidth and also customized-gain applications in general. Variation impact of homogeneous and inhomogeneous broadenings, injection current and number of QD groups on optical gain are explained in detail. Besides proposing a design procedure for implementation of an ultra-broadband optical gain using superimposed QDs in solution-processed technology, the proposed gain engineering idea using this technology provides practically infinite bandwidth and an easy way to realize. By introducing this idea, one more step is actually taken to approach the effectiveness of solution process technology.

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Performance Evaluation of Optical Amplifiers for High-Speed Optical Networks

Cited by 8 publications

References 14 publications

Untitled

Untitled

Dynamics and its Effects on Saturation Region in Semiconductor Optical Amplifiers

Ultra-broadband Optical Gain Engineering in Solution-processed QD-SOA Based on Superimposed Quantum Structure

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