A novel high-speed and wavelength insensitive Y-branch modulator with reduced and controllable chirp

We propose and demonstrate a novel high-speed and wavelength insensitive Y-branch modulator in InGaAsP multiple-quantum-wells that exhibits negligible chirp and is also suitable for achieving controllable chirp. We raise the refractive index on one arm via applied bias and use the unbiased arm as a...

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Bibliographic Details
Published in:IEEE photonics technology letters 1999-10, Vol.11 (10), p.1247-1249
Main Authors: Khan, M.N., Monnard, R., Miller, B.I., Burrow, E.C., Burrus, C.A.
Format: Article
Language:English
Subjects:
Bias
Chirp
Chirp modulation
Digital modulation
High speed
Modulators
Optical modulation
Optical receivers
Optical refraction
Optical switches
Optical waveguides
Phase change
Refractive index
Stability
Switches
Telecommunication control
Waveguide transitions
Wavelengths
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Summary:We propose and demonstrate a novel high-speed and wavelength insensitive Y-branch modulator in InGaAsP multiple-quantum-wells that exhibits negligible chirp and is also suitable for achieving controllable chirp. We raise the refractive index on one arm via applied bias and use the unbiased arm as a modulator. As the light switches to the biased arm, the modulated light in the unbiased arm experiences little phase change and therefore exhibits negligible chirp. Tunable chirp may be achieved using a push-pull bias configuration. We demonstrate that our modulator chirp is /spl sim/10 times lower than that of typical electroabsorption modulators.
ISSN:1041-1135
1941-0174
DOI:10.1109/68.789706