A novel high-speed and wavelength insensitive Y-branch modulatorwith reduced and controllable chirp |
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Authors: | Khan M.N. Monnard R. Miller B.I. Burrow E.C. Burrus C.A. |
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Affiliation: | Lucent Technol., AT&T Bell Labs., Holmdel, NJ ; |
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Abstract: | 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 ~10 times lower than that of typical electroabsorption modulators |
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