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WDM receiver with integrated optical preamplifier, aspheric lens and grating filter

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6 Author(s)
Verdiell, J.-M. ; AT&T Bell Labs., Holmdel, NJ, USA ; Koch, T.L. ; Young, M.G. ; Miller, B.I.
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A photonic integrated circuit implementing a receiver with an optical preamplifier and a wavelength filter for dense WDM systems has been fabricated. The integrated filter is based on planar optics and formed by a waveguide lens and Bragg grating combination. This arrangement provides a narrow filtering response of 0.4 nm and a high sidemode rejection ratio of 20 dB. A monolithically integrated preamplifier and photodetector are also incorporated to allow for high-sensitivity and high-speed operation.

Published in:

Electronics Letters  (Volume:29 ,  Issue: 11 )