Direct frequency modulation of vapor phase transported, distributed feedback semiconductor lasers
作者:
R. S. Vodhanel,
N. K. Cheung,
T. L. Koch,
期刊:
Applied Physics Letters
(AIP Available online 1986)
卷期:
Volume 48,
issue 15
页码: 966-968
ISSN:0003-6951
年代: 1986
DOI:10.1063/1.96625
出版商: AIP
数据来源: AIP
摘要:
The frequency modulation (FM) due to injection current modulation of vapor phase transported distributed feedback (VPT DFB) semiconductor lasers is measured as a function of modulation frequency from 10 kHz to 1 GHz. A large frequency modulation response of 350 MHz/mA is obtained for the modulation frequency range of 10 to 1000 MHz. Demodulation of optical frequency shift keying (FSK) at 560 Mb/s is demonstrated, indicating that frequency modulation due to thermal modulation does not pose a significant limitation at this bit rate or higher. The large FM response together with modulation bandwidths up to 8 GHz makes the VPT DFB laser an attractive source for high bit rate optical FSK transmission.
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