All-fiber bidirectional optical parametric oscillator for precision sensing

R. Gowda, N. Nguyen, J. C. Diels, R. A. Norwood, N. Peyghambarian, K. Kieu

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


We present the design and operation of an all-fiber, synchronously pumped, bidirectional optical parametric oscillator (OPO) for precision sensing applications. The fiber-based OPO (FOPO) generates two frequency combs with identical repetition rates but different carrier offset frequencies. A narrow beatnote was observed with full-width at half-maximum (FWHM) linewidth of <10 Hz when the two frequency combs were overlapped on a photodetector. The all-fiber design removes the need for free-space alignment and adjustment. In addition, an external delay line to overlap the two pulse trains in time on the detector is not needed since our unique design provides automatic delay compensation. We expect the novel FOPO to find important applications in precision measurements including rotation sensing with ultra-large sensing area and sensitivity.

Original languageEnglish (US)
Pages (from-to)2033-2036
Number of pages4
JournalOptics letters
Issue number9
StatePublished - 2015

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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