Conservation of AM index of a rf subcarrier in IM–DD optical link

Chattopadhyay, Taraprasad; Bhattacharyya, Prosenjit; Ghosh, Chiranjib

doi:10.1016/j.ijleo.2016.03.054

Cited by 4 publications

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References 14 publications

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“…The basic scheme of modulation and detection in optical communication is the intensity modulation (IM) and direct detection (DD) in a photodiode. Some workers have studied theoretically the phenomenon of nonlinear distortion reduction [3][4][5] in a laser diode (LD) by high power lightwave injection into the modulated LD. This distortion is generated internally in the LD itself due to its nonlinearity in the light output vs. bias current characteristics.…”

Section: Introductionmentioning

confidence: 99%

Total Harmonic Modulation Distortion of an Injection-Locked Fabry-Perot Laser Diode Directly Modulated by a Multi-harmonic RF Signal

Chakraborty¹,

Chattopadhyay²

2018

IJET

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This paper describes effects of low-level light injection into a directly modulated Fabry-Perot laser diode on the external total harmonic modulation distortion when the external fundamental modulating signal is multi-harmonic contaminated. Necessary theory of the injected FPLD has been developed and an expression for total harmonic distortion of the modulating signal has been derived considering low-level light injection. The total harmonic modulation distortion has been experimentally measured for the RF modulation source and for the injection-locked slave FPLD output after photodetection.

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Section: Introductionmentioning

confidence: 99%