Accession Number:

ADP011253

Title:

A Novel Interferometer for Measuring Small Distance

Descriptive Note:

Corporate Author:

HARBIN INST OF TECH (CHINA)

Personal Author(s):

• ZHAOXIA, Wu
• zhiquan, Li
• kai, Tong
• xifu, Qiang

Report Date:

2000-07-01

Pagination or Media Count:

5.0

Abstract:

A novel wavelength scanning optical fiber dual-interferometer for measuring small distance has been developed in flis paper. A wavelength-scanning source is used to simultaneously illuminate two Fabry-Perot F-P cavities. One is as the sensing cavity, the other is as the reference cavity. If the length of the reference cavity is pre-calibrated and maintain constant, and the scanning wavelength is taken as an inter-converter to compare the gap length of the sensing cavity with the reference cavity length, using the frequency spectrum separator, absolute measurement can be obtained.

Descriptors:

• *OPTICAL INTERFEROMETERS
• *FIBER OPTICS TRANSMISSION LINES
• SCANNING
• FREQUENCY
• CAVITIES
• SPECTRA
• FABRY PEROT INTERFEROMETERS
• RANGE(DISTANCE)
• CHINA
• SEPARATORS

Subject Categories:

• Fiber Optics and Integrated Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE