Noise Suppression on the Tunable Laser for Precise Cavity Length Displacement Measurement

The absolute distance between the mirrors of a Fabry-Perot cavity with a spacer from an ultra low expansion material was measured by an ultra wide tunable laser diode. The DFB laser diode working at 1542 nm with 1.5 MHz linewidth and 2 nm tuning range has been suppressed with an unbalanced heterodyn...

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Bibliographic Details
Main Authors: Radek Šmíd, Martin Čížek, Břetislav Mikel, Jan Hrabina, Josef Lazar, Ondřej Číp
Format: Article
Language:English
Published: MDPI AG 2016-09-01
Series:Sensors
Subjects:
Online Access:http://www.mdpi.com/1424-8220/16/9/1428