Volume 6, Issue 2 (International Journal of Optics and Photonics (IJOP) Vol 6, No 2, Summer-Fall 2012)                   IJOP 2012, 6(2): 105-111 | Back to browse issues page

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Horri A, Faez R. Optical ASK and FSK Modulation By Using Quantum Well Transistor Lasers. IJOP. 2012; 6 (2) :105-111
URL: http://ijop.ir/article-1-129-en.html
PHD Department of Electrical Engineering, Arak Branch, Islamic Azad University, Arak, Iran
Abstract:   (4452 Views)

In this paper, transistor lasers (TLs) are used as an optical modulator for generation of ASK(Amplitude Shift Keying) and FSK (Frequency Shift Keying) optical signals. Our analysis is based on continuity equation, rate equations, and the theory of discontinuity of quasi-fermi level at the abrupt junction. Our simulation results indicate that, the specification of ASK and FSK optical signals, are affected by dynamical behavior of TL. Also our simulation results indicate that, the collector-emitter voltage amplitude should be small enough that the nonlinear properties of TLs do not destroy the modulated optical signals.

Full-Text [PDF 298 kb]   (1023 Downloads)    
Type of Study: Research | Subject: General
Received: 2013/07/20 | Revised: 2015/02/24 | Accepted: 2013/11/5 | Published: 2013/11/5

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