期刊
IEEE JOURNAL OF QUANTUM ELECTRONICS
卷 56, 期 5, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JQE.2020.3004144
关键词
Modeling; semiconductor lasers; semiconductor optical amplifiers; spontaneous emission
资金
- National a Thousand Program from the Academy of Opto-Electronics of Chinese Academy of Sciences [Y80B22A13Y]
- National Research and Development Projects for Key Scientific Instruments [ZDYZ2013-2]
- Guangdong Key Research and Development Program [2018B090904003]
In this paper, the amplified spontaneous emission (ASE) intensity of a distributed feedback laser diode (DFB-LD) amplified by a semiconductor optical amplifier (SOA) is calculated, and the signal-to-spontaneous emission ratio (SSER) is investigated assuming a wavelength tunable laser. Based on a formulization appropriate for an active layer under a low excitation, the theoretical limit of the SSER of the SOA is obtained, and the SSER including the ASEs from both the DFB-LD and the SOA is numerically calculated. The side mode suppression ratio (SMSR) taking the spectral distribution into consideration is also calculated by expanding the same method.
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