Papers Published

1. Geddis, Demetris L. and Seo, S.W. and Jokerst, N.M., A 3-D bidirectional optical link using a stacked thin-film emitter and detector, IEEE Photonics Technology Letters, vol. 15 no. 3 (2003), pp. 455 - 457 [LPT.2002.807911] .
   (last updated on 2007/04/16)

   Abstract:
   The fabrication of a colocated three-dimensional stacked thin-film device, which can be used for single-fiber bidirectional communication, has been demonstrated. A thin-film light-emitting diode (LED) with a diameter of 50 μm has been stacked on top of a thin-film inverted metal-semiconductor-metal (I-MSM) photodetector (PD) with a detecting diameter of 200 μm. Both devices in the stack have been tested, and the I-MSM PD in the PD/LED stack has a responsivity of 0.31 A/W, which is consistent with the theoretical analysis using a uniform illumination approximation.

   Keywords:
   Light emitting diodes;Photodetectors;Bandwidth;Fiber optic networks;Light transmission;Semiconducting indium gallium arsenide;Continuous wave lasers;Fabrication;Optimization;