Bragg section effects on linewidth and lineshape in 1.55-μm DBR tunable laser diodes

We report linewidth and lineshape measurements on 1.55-μm distributed Bragg reflector tunable laser diodes using the heterodyne method. We measure Lorentzian linewidths ranging from 3.5 to 25 MHz without any passive section injection. Biasing the Bragg section enhances the residual linewidth up to 6...

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Bibliographic Details
Published in:IEEE photonics technology letters 2004-06, Vol.16 (6), p.1429-1431
Main Authors: Signoret, P., Myara, M., Tourrenc, J.-P., Orsal, B., Monier, M.-H., Jacquet, J., Leboudec, P., Marin, F.
Format: Article
Language:English
Subjects:
Bragg reflectors
Diode lasers
Diodes
Distributed Bragg reflectors
Distributed feedback devices
Electronics
Engineering Sciences
Feedback
Gaussian
Laser feedback
Optical feedback
Optical filters
Optical mixing
Optical sensors
Optical transmitters
Photonics
Tunable circuits and devices
Tunable lasers
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Description
Summary:We report linewidth and lineshape measurements on 1.55-μm distributed Bragg reflector tunable laser diodes using the heterodyne method. We measure Lorentzian linewidths ranging from 3.5 to 25 MHz without any passive section injection. Biasing the Bragg section enhances the residual linewidth up to 6.2 MHz, changes the linewidth-power product, and brings an additional Gaussian lineshape. The feedback sensitivity of the overall setup is also demonstrated.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2004.826707