Vernier spectrometer using counterpropagating soliton microcombs
Abstract
When measuring length, we learn in school that a vernier scale that uses two rulers, slightly offset, can reduce human estimation error and improve the resolution of a measurement. Yang et al. apply the same vernier principle with optical combs to develop a spectrometer that can determine the wavelength of light with high accuracy and precision. Two phase-locked counterpropagating optical microcombs generated in a miniature microresonator provided the rulers. Matching up of the “teeth” of the combs was then used to measure the wavelength of the optical light sources.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 01, 2019
- Source ID
- 10.1126/science.aaw2317
Entities
People
- Amnon Yariv
- Boqiang Shen
- Chengying Bao
- Heming Wang
- John E. Bowers
- Kerry Vahala
- Ki Youl Yang
- Lue Wu
- Minh Tran
- Qi-Fan Yang
- Zhuomin M. Zhang
Organizations
- California Institute of Technology
- Stanford University
- University of California, Santa Barbara