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Temperature-Tolerant Wavelength-Setting and -Stabilization in a Polymer-Based Tunable DBR Laser

 
: Happach, M.; Felipe, D. de; Friedhoff, V.N.; Kleinert, M.; Zawadzki, C.; Rehbein, W.; Brinker, W.; Mohrle, M.; Keil, N.; Hofmann, W.; Schell, M.

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Journal of Lightwave Technology 35 (2017), Nr.10, S.1797-1802
ISSN: 0733-8724
Englisch
Zeitschriftenaufsatz
Fraunhofer HHI ()

Abstract
In this paper, we present a method of self-detection of mode hops in a distributed Bragg reflector tunable laser using the voltage drop in the active section as a monitoring signal. Based on this method, a wavelength setting and stabilization algorithm that is tolerant to temperature variations is proposed. Wavelength locking for a period of more than seven days with an accuracy better than +/- 1.25 GHz has been achieved, meeting the ITU-T standard for 25 GHz channel spacing. Under forced changes in the operation temperature from 15 degrees to 60 degrees, with variations of 0.1 degrees/s, the maximum allowed deviation of +/- 2.5 GHz for the ITU-T standard with 50 GHz channel spacing was kept.

: http://publica.fraunhofer.de/dokumente/N-480691.html