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Proceedings Paper

Highly accurate frequency counting system for 1.5 um wavelength semiconductor lasers
Author(s): Motonobu Kourogi; Kenichi Nakagawa; Motoichi Ohtsu
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Paper Abstract

For highly accurate optical frequency measurement in 1.5 micrometers wavelength region, an optical frequency comb (OFC) generator was realized by using a high frequency LiNbO3 electro-optic phase modulator which was installed in a Fabry-Perot cavity. By using the OFC generator, we demonstrated the frequency difference measurement up to 0.5 [THz] with a signal-to-noise ratio higher than 61 [dB], and the heterodyne optical phase locking with a heterodyne frequency of 0.5 [THz] in which the residual phase error variance was less than 0.01 [radian2]. The maximum measurable frequency difference, which was defined as a sideband frequency with the signal-to-noise ratio of 0 [dB], was estimated to be 4 [THz].

Paper Details

Date Published: 30 April 1993
PDF: 11 pages
Proc. SPIE 1837, Frequency-Stabilized Lasers and Their Applications, (30 April 1993); doi: 10.1117/12.143676
Show Author Affiliations
Motonobu Kourogi, Tokyo Institute of Technology (Japan)
Kenichi Nakagawa, Tokyo Institute of Technology (Japan)
Motoichi Ohtsu, Tokyo Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 1837:
Frequency-Stabilized Lasers and Their Applications
Y. C. Chung, Editor(s)

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