
Proceedings Paper
Signal and data processing of wavemeter with Michelson interferometerFormat | Member Price | Non-Member Price |
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Paper Abstract
Laser wavemeter with a Michelson interferometer is a high-precision instrument. The signal and data processing is
so important to this wavemeter. It includes an optoelectronic conversion module, an amplifying and comparator
circuit, a PLL unit, a counter, serial communications between the MCU and the computer. S1223 photodiodes are
selected as the detectors. PLL unit including NE564 and 74LS193 is used to multiply frequency. The timing
capacitor, loop gain coefficient, and the locking range of PLL are calculated. The counter is used to measure the
number of interference fringes of the reference laser and the number of interference fringes of an unknown laser.
Finally, the wavelength of an unknown laser is calculated and displayed on LCD. The signal and data processing of
the wavemeter meets its accuracy of seven-bit significant figure.
Paper Details
Date Published: 10 June 2006
PDF: 6 pages
Proc. SPIE 6344, Advanced Laser Technologies 2005, 634421 (10 June 2006); doi: 10.1117/12.693650
Published in SPIE Proceedings Vol. 6344:
Advanced Laser Technologies 2005
Ivan A. Shcherbakov; Kexin Xu; Qingyue Wang; Alexander V. Priezzhev; Vladimir I. Pustovoy, Editor(s)
PDF: 6 pages
Proc. SPIE 6344, Advanced Laser Technologies 2005, 634421 (10 June 2006); doi: 10.1117/12.693650
Show Author Affiliations
Liqiang Wang, Beijing Univ. of Posts and Telecommunications (China)
Published in SPIE Proceedings Vol. 6344:
Advanced Laser Technologies 2005
Ivan A. Shcherbakov; Kexin Xu; Qingyue Wang; Alexander V. Priezzhev; Vladimir I. Pustovoy, Editor(s)
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