[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.3807/KJOP.2018.29.1.032

Effect of Amplified Spontaneous Emission on the Gain Recovery of a Semiconductor Optical Amplifier

Lee, Hojoon (Department of Information Communication Engineering, Hoseo University)

Publication Information

Korean Journal of Optics and Photonics / v.29, no.1, 2018 , pp. 32-39 More about this Journal

Abstract

The impact of the amplified spontaneous emission (ASE) on the gain recovery time of a bulk semiconductor optical amplifier (SOA) is investigated. The gain-recovery time is obtained by determining the time evolution of the gain, carrier density, and ASE in an SOA, after the propagation of a short pump pulse and continuous-wave (CW) probe of gain dynamics. In the simulation, a wide-band-semiconductor model, which can be characterized by the material gain coefficient over a wide wavelength range, is used, because the gain bandwidth of a practical SOA is very wide. The pump pulse and counterpropagating CW probe field are considered in the simulation, with the ASE noise spectrum equally divided.

Keywords

Amplified spontaneous emission (ASE); Semiconductor optical amplifiers (SOA); Gain recovery time;

Citations & Related Records

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