| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for observing optical interference capable of detecting frequency axis information. SOLUTION: In an interference optical system 20, an optical frequency comb generated by an optical frequency comb generator 20 from laser light emitted from a laser light source 10 is divided into reference light and measurement light to enter them into a reference optical system 40 and a measurement optical system 50; interference light Pc of reference light Pa and measurement light Pb is generated which are returned respectively from the reference optical system 40 and the measurement optical system 50; light spectrum contained in the interference light Pc generated by the interference optical system 20 is separated by a spectrometer 60 and each the light spectrum is detected by a photodetector array 70; outputs of each the spectrum detected by the photodetector array 70 are supplied to a signal processor 80. COPYRIGHT: (C)2009,JPO&INPIT
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