Patent ID: 11933730
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 1:
2. The light source according to claim 1, wherein

v1≥v0−(M−W1)/2 and

v2≤v0−M−W2/2

are satisfied
where the CrFL outputs an optical pulse including a band having a maximum wavenumber v1 and a minimum wavenumber v2, v0 denotes a center wavenumber of the optical pulse amplified by the YbFA, M denotes a maximum wavenumber of Raman scattering to be used for measurement, W1 denotes each of the two wavelength bands in the one-optical path mode, and W2 denotes each of the two wavelength bands in the two-optical path mode.