Analysis of the Direct Modulation Response of Nanowire Lasers

Author

Abdul Sattar, Zubaida ; Alan Shore, K.

Author_Institution

Sch. of Electron. Eng., Bangor Univ., Bangor, UK

Volume

33

Issue

14

fYear

2015

fDate

July15, 15 2015

Firstpage

3028

Lastpage

3033

Abstract

The response of nanolasers to direct current modulation has been analyzed in both the small-signal and large-signal regimes. Calculations have been performed using rate equations which include the Purcell cavity-enhanced spontaneous emission factor F and the spontaneous emission coupling factor β. It is observed that in general increased F and β reduce the 3-dB direct current modulation bandwidth. Conditions are identified where the peak modulation response at resonant frequencies 35 and 30 GHz can be achieved. For both small- and large-signal regimes, modulation bandwidth of approximately 55 GHz can be achieved.

Keywords

laser cavity resonators; nanophotonics; nanowires; optical modulation; semiconductor lasers; semiconductor quantum wires; spontaneous emission; Purcell cavity-enhanced spontaneous emission coupling factor β; Purcell cavity-enhanced spontaneous emission factor F; direct current modulation bandwidth reduction; frequency 30 GHz; frequency 35 GHz; large-signal regimes; nanowire lasers; rate equations; resonant frequencies; small-signal regimes; Bandwidth; Couplings; Frequency modulation; Resonant frequency; Spontaneous emission; Threshold current; Large signal; modulation bandwidth; modulation response; nano-laser; semiconductor laser; small signal;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2015.2421504

Filename

7083699