Subnanosecond tunable distributed Bragg reflector lasers with an electrooptical Bragg section

For the first time, a DBR laser with an electrooptical Bragg section is reported for fast wavelength tuning operation. This structure is based on the photonic integration of a Fabry-Perot buried ridge stripe laser with a ridge waveguide modulator in which the grating is etched. By proper structure d...

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Bibliographic Details
Published in:IEEE journal of selected topics in quantum electronics 1995-06, Vol.1 (2), p.396-400, Article 396
Main Authors: Delorme, F., Slempkes, S., Ramdane, A., Rose, B., Nakajima, K.
Format: Article
Language:English
Subjects:
Distributed Bragg reflectors
Fabry-Perot
Laser modes
Laser tuning
Lasers and electrooptics
Optical modulation
Optical tuning
Optical waveguides
Tunable circuits and devices
Waveguide lasers
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Summary:For the first time, a DBR laser with an electrooptical Bragg section is reported for fast wavelength tuning operation. This structure is based on the photonic integration of a Fabry-Perot buried ridge stripe laser with a ridge waveguide modulator in which the grating is etched. By proper structure design and adjustment of the Franz-Keldysh quaternary gap used in the Bragg section, a 2.5-nm tuning range with six distinct modes is obtained for a -4 V voltage applied to the Bragg section. Under this tuning, the optical-output power variation is limited to 2.5 dB for a 370-/spl mu/m DBR length. Using this concept, we measured the best switching time between different wavelength channels ever reported on DBR lasers, on this device: 500 ps independently of the wavelength shift.< >
ISSN:1077-260X
1558-4542
DOI:10.1109/2944.401221