Generation of ultra-wide and flat optical frequency comb based on electro-absorption modulator and frequency modulator

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• 作者：Di Gao 高迪 ; Pei-li Li 李培䶿/a> ; Qian Shao 邵茜 ; Jing-yuan Chen 陈静轿/a>
• 刊名：Optoelectronics Letters
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：12
• 期：2
• 页码：97-100
• 全文大小：1,099 KB
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• 作者单位：Di Gao 高迪 (1)
  Pei-li Li 李培丽 (1)
  Qian Shao 邵茜 (1)
  Jing-yuan Chen 陈静远 (1)
  
  1. College of Optoelectronic Engineering, Nanjing University of Post & Telecommunications, Nanjing, 210023, China
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Applied Optics, Optoelectronics and Optical Devices
  Chinese Library of Science
  
• 出版者：Tianjin University of Technology, co-published with Springer-Verlag GmbH
• ISSN：1993-5013

文摘

An ultra-wide and flat optical frequency comb (OFC) generation scheme using multiple continuous wave (CW) light sources based on electro-absorption modulator (EAM) and frequency modulator (FM) is proposed. In the scheme, each CW light source is broadened and modulated by the first EAM and FM, respectively. The second EAM is introduced to flatten the ultra-wide OFC lines. By setting the wavelength spacing of light sources equal to the bandwidth of sub-OFC, an ultra-wide OFC can be obtained. Principle analysis and simulation for the scheme are performed. The results show that in the case of a single light source, a tunable and flat OFC is obtained. With the increase of light sources, the bandwidth of the generated ultra-wide OFC expands rapidly. In the case of 28 light sources, a 22 GHz ultra- wide OFC with bandwidth of 16.52 THz can be generated.