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Long-wavelength resonant vertical-cavity LED/photodetector with a 75-nm tuning range

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7 Author(s)
Christenson, G.L. ; Sch. of Electr. Eng., Cornell Univ., Ithaca, NY, USA ; Tran, A.T.T.D. ; Zhu, Z.H. ; Lo, Y.H.
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A design for a highly tunable long-wavelength LED/photodetector has been investigated. The device consists of a GaAs-based distributed Bragg reflector (DBR) that is wafer-bonded to InP-based active layers, with a surface-micromachined tunable top DBR mirror to produce the wavelength shift. A 1.5-μm device has been fabricated with a continuous tuning range of 75 nm. An extinction ratio of greater than 20 dB existed across the entire tuning range.

Published in:

Photonics Technology Letters, IEEE  (Volume:9 ,  Issue: 6 )