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InGaAs/InGaAsP MQW optical amplifier integrated with grating-assisted vertical-coupler noise filter

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11 Author(s)
Kim, I. ; AT&T Bell Labs., Holmdel, NJ, USA ; Alferness, R.C. ; Buhl, L.L. ; Koren, U.
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A photonic integrated circuit with an InGaAs/InGaAsP multiple-quantum-well (MQW) traveling-wave optical amplifier and a grating-assisted vertical-coupler filter as a noise filter have been demonstrated. A fiber-to-amplifier/filter gain of approximately 0.5 dB and a 3-dB filter bandwidth (FWHM) of approximately 70 AA at 1.56 mu m filter center wavelength have been achieved. This photonic circuit is potentially suitable as a building-block for preamplifier lightwave receivers or high-gain, high-power optical amplifiers which are essential for optical communication systems and lightwave networks.<>

Published in:

Photonics Technology Letters, IEEE  (Volume:5 ,  Issue: 11 )