Pulse Narrowing and RF Linewidth Reduction of Integrated Passively Mode-Locked Laser in Anticolliding Design by Means of Spectral Tuning

In this paper, we present the first tunable extended cavity integrated passively mode-locked laser realized in an anticolliding design. The laser is realized as an InP-based photonic integrated circuit. A detailed study of the laser performance under various operating conditions is presented. The ev...

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Bibliographic Details
Published in:IEEE photonics journal 2016-08, Vol.8 (4), p.1-10
Main Authors: Moskalenko, V., Williams, K. A., Bente, E. A. J. M.
Format: Article
Language:English
Subjects:
Absorption
Bragg reflectors
Cavity resonators
Distributed Bragg reflectors
Evolution
Injection current
Lasers
Mode-locked lasers
Optical pulses
Photonics
Radio frequency
Reduction
semiconductor lasers
Semiconductor optical amplifiers
tunable lasers
Tuning
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Summary:In this paper, we present the first tunable extended cavity integrated passively mode-locked laser realized in an anticolliding design. The laser is realized as an InP-based photonic integrated circuit. A detailed study of the laser performance under various operating conditions is presented. The evolution of the radio-frequency (RF) spectrum and optical spectrum with the injection current to the optical amplifier is investigated. Tuning over 9 nm is achieved by injecting current in a distributed Bragg reflector section. We demonstrate that tuning of the optical spectrum toward shorter wavelengths, which increases absorption in the saturable absorber section, leads to an improvement of the mode-locked laser performance in terms of reduction of fundamental RF linewidth and reduction of the pulsewidths.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2016.2578945