Enhancing Modulation Bandwidth of Semiconductor Lasers beyond 50 GHz by Strong Optical Feedback for Use in Millimeter-Wave Radio over Fiber Links

Autor:	Mohamed S. Alghamdi, Reem M. Al-Tuwirqi, Fumio Koyama, Ahmed Bakry, Moustafa Ahmed
Jazyk:	angličtina
Rok vydání:	2013
Předmět:	Physics Modulation bandwidth Radio over fiber Frequency band business.industry Modulation Extremely high frequency General Engineering General Physics and Astronomy Optoelectronics business Frequency modulation Semiconductor laser theory
Zdroj:	Jpn.J.Appl.Phys. 52
Popis:	We present the modeling on high-speed modulation of semiconductor lasers beyond 50 GHz over a frequency band of 2 GHz by using strong optical feedback (OFB). This ultra high modulation frequency is achieved by adjusting the external-cavity resonance frequency close to the modulation frequency and optimizing strong OFB conditions to achieve stable operation. We show that this optimized strong OFB results in about 20 dB improvement in the link gain of a 55.8 GHz radio over fiber (RoF) link. We also discuss the influence of environmental variations on the simulated modulation characteristics.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44e0bd9d3837f242f7e06c1566e5266e http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100665219 Zobrazit plný text záznamu