Evaluation of frequency stability of terahertz waves generated by Mach-Zehnder-modulator-based flat comb generator

Isao Morohashi, Yoshihisa Irimajiri, Motohiro Kumagai, Takahide Sakamoto, Norihiko Sekine, Tetsuya Kawanishi, Motoaki Yasui, Iwao Hosako

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In order to generate a reference signal used in phase locking of quantum cascade lasers (QCLs) operating in the THz range, we adopted a photonic down-conversion technique. Optical two-tone signals are created by a combination of a Mach-Zehnder-modulator-based flat comb generator (MZ-FCG) and a dispersion-flattened dispersion-decreasing fiber (DF-DDF). THz signals generated from the two-tone signal by using a uni-traveling carrier diode (UTC-PD). We have demonstrated generation of 700 GHz signals, and confirmed that the signal has the C/N ratio of greater than 30 dB and the frequency stability of 10 -11 at the averaging time of 1 sec.

Original languageEnglish
Title of host publication2013 IEEE International Topical Meeting on Microwave Photonics, MWP 2013
PublisherIEEE Computer Society
Pages206-209
Number of pages4
ISBN (Print)9781467360715
DOIs
Publication statusPublished - 2013 Jan 1
Externally publishedYes
Event2013 IEEE International Topical Meeting on Microwave Photonics, MWP 2013 - Alexandria, VA, United States
Duration: 2013 Oct 282013 Oct 31

Publication series

Name2013 IEEE International Topical Meeting on Microwave Photonics, MWP 2013

Other

Other2013 IEEE International Topical Meeting on Microwave Photonics, MWP 2013
CountryUnited States
CityAlexandria, VA
Period13/10/2813/10/31

Keywords

  • dispersion-flattened dispersion-decreasing fiber
  • optical frequency comb
  • terahertz wave

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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  • Cite this

    Morohashi, I., Irimajiri, Y., Kumagai, M., Sakamoto, T., Sekine, N., Kawanishi, T., Yasui, M., & Hosako, I. (2013). Evaluation of frequency stability of terahertz waves generated by Mach-Zehnder-modulator-based flat comb generator. In 2013 IEEE International Topical Meeting on Microwave Photonics, MWP 2013 (pp. 206-209). [6724056] (2013 IEEE International Topical Meeting on Microwave Photonics, MWP 2013). IEEE Computer Society. https://doi.org/10.1109/MWP.2013.6724056