Generation of optical frequencies out of the frequency comb of a femtosecond laser for DWDM telecommunication

✍ Scribed by Y.-J. Kim; B.J. Chun; Y. Kim; S. Hyun; S.-W. Kim

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 200 KB
• Volume: 7
• Category: Article
• ISSN: 1612-2011
• DOI: 10.1002/lapl.201010012

✦ Synopsis

We exploit the frequency comb of a fs laser as the frequency ruler to generate reference optical frequencies for multi-channel DWDM (dense wavelength-divisionmultiplexing) telecommunication. Our fiber-based scheme of single-mode extraction enables on-demand generation of optical frequencies within the telecommunication band with an absolute frequency uncertainty of 9.1×10 -13 . The linewidth of extracted optical modes is less than 1 Hz, and the instability is measured 2.3×10 -15 at 10 s averaging. This outstanding performance of optical frequency generation would lead to a drastic improvement of the spectral efficiency for the nextgeneration DWDM telecommunication.