Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session C71: Poster Session I (2:00pm - 5:00pm)
Monday, March 2, 2020
Room: Exhibit Hall C/D
Abstract: C71.00155 : Dual comb spectroscopy for measuring the group velocity dispersion of optical fiber realized by fast locking of the beat note with a piezoelectric module*
Kana Alyssa Sumihara
(Keio Univ / AIST)
Here, we demonstrate an application of measuring the group velocity dispersion (GVD) of single-mode fiber (SMF) by using DCS. We constructed two Er-fiber-based OFCs and achieved the fast locking of the beat note by using PZT module based on Ref. . The beat note was phase locked with the servo bandwidth of over 100 kHz and the integrated phase noise as 0.21 rad and we realized the DCS system. By using this system, we obtained a wavelength-dependent GVD of SMF and the GVD as -22.0 ps^2/km at 1550 nm with the standard deviation of 0.02 ps^2/km. It agrees well with the nominal value of the GVD. Thus, we conclude that our DCS works as a brilliant tool for solid state physics.
 L. C. Sinclair et al., Rev. Sci. Instrum. 86, 081301 (2015).
*Research Grant of Keio Leading-edge Laboratory of Science & Technology
JSPS KAKENHI Grant Number JP18H02040.
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