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Quantum well interferometric modulator monolithically integrated with 1.55 mu m tunable distributed Bragg reflector laser

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9 Author(s)
Zucker, J.E. ; AT&T Bell Labs., Holmdel, NJ, USA ; Jones, K.L. ; Newkirk, M.A. ; Gnall, R.P.
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The first monolithically integrated laser/interferometric modulator is reported. The total chip length of 2.5 mm includes a 970 mu m-long strained InGaAs-InGaAsP quantum well gain section, a 230 mu m-long wavelength tuning section containing a distributed Bragg reflector grating, and an 800 mu m-long active length Mach-Zehnder modulator based on electrorefractive InGaAsP-InP quantum wells. 4 V push-pull drive voltage produces 12.5 dB modulation depth with -9 dBm optical power coupled into a cleaved fibre.

Published in:

Electronics Letters  (Volume:28 ,  Issue: 20 )

Date of Publication:

24 Sept. 1992

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