Modulation characteristics of a semiconductor laser

Authors

Alvarado B. Tarun ⋅ PH National Institute of Physics, University of the Philippines Diliman
Edgardo R. Gutierrez Jr. ⋅ PH National Institute of Physics, University of the Philippines Diliman
Manuela Fe H. Tarroja-Keller ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

There has been considerable interest in the optical output modulation of semiconductor laser diodes, since this may provide new capabilities for fast information transmission and data processing. The simplest way to modulate the output of a semiconductor laser is by direct modulation. Direct modulation of a semiconductor laser is achieved by varying the injected current through the laser. The variation of the injection current provides a way of modulating the laser for such applications as optical communications. The response of the laser to such varying current inputs is therefore of practical importance and must be investigated.
In this paper we study the characteristics of a directly modulated semiconductor laser. A numerical analysis based on the semiconductor laser rate equations was done to simulate the experiment. Small and large signal modulations were compared for different amplitudes and modulation frequencies. The actual experiment is in good agreement with the numerical result: The suitability of the system for applications in telecommunication was then analyzed based on the results.

Downloads

Issue

1996: Proceedings of the 14th National Physics Congress of the Samahang Pisika ng Pilipinas

Article ID

SPP-1996-LS-03

Section

Laser Physics and Spectroscopy

Published

1996-12-06

How to Cite

[1]

AB Tarun, ER Gutierrez, and MFH Tarroja-Keller, Modulation characteristics of a semiconductor laser, Proceedings of the Samahang Pisika ng Pilipinas 14, SPP-1996-LS-03 (1996). URL: https://proceedings.spp-online.org/article/view/SPP-1996-LS-03.