Transversal loading sensor based on tunable beat frequency of a dual-wavelength fiber laser

Hongyan Fu, Xuewen Shu, Chengbo Mou, Lin Zhang, Sailing He, Ian Bennion

Research output: Contribution to journalArticlepeer-review


Microwave signal generation by using the photonic beating from a phase-shift fiber Bragg grating (PS-FBG)-based dual-wavelength laser is proposed and experimentally demonstrated. The dual-wavelength laser is formed by a linear cavity, in which a PS-FBG is used as a dual-wavelength selective component. Transversal loading on the PS-FBG enhances the birefringence of the optical fiber and consequently makes the transmission peak of the PS-FBG splitting into two sharp transmission peaks of orthogonal polarizations. The wavelength spacing between the two transmission peaks increases with the transversal loading on the PS-FBG, thus making the polarization beating frequency increase. This property is exploited in a transversal loading sensor.
Original languageEnglish
Pages (from-to)987-989
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number14
Publication statusPublished - 15 Jul 2009

Bibliographical note

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  • beating
  • microwave generation
  • phase-shift fiber Bragg grating
  • transversal loading
  • photonics


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