Title :
A single-ended laser driver with shunt coplanar waveguide for reduced crosstalk
Author :
Zhao, Huan ; Lei, Liangiun ; Ba, Mamour ; Jemison, William D. ; Hwang, James C M ; Dang, Gerard ; Liu, J. Jiang ; Chang, Wayne
Author_Institution :
Lehigh Univ., Bethlehem, PA, USA
fDate :
30 Nov.-2 Dec. 2005
Abstract :
This paper describes a driver circuit for two-dimensional VCSEL arrays. The driver circuit uses a novel low-impedance shunt coplanar waveguide to minimize interchannel crosstalk. To demonstrate our approach, a 10 Gb/s GaAs HBT driver circuit has been designed and fabricated. Both measured and simulated results show a 20 dB crosstalk improvement compared to similar designs using conventional microstrip and coplanar waveguides. To the best of our knowledge, the crosstalk is the lowest reported for a two-dimensional VCSEL array driver in the open literature.
Keywords :
bipolar integrated circuits; coplanar waveguides; crosstalk; driver circuits; interference suppression; laser accessories; semiconductor laser arrays; surface emitting lasers; 10 Gbit/s; 2D vertical cavity surface emitting laser arrays; GaAs HBT driver circuit; conventional microstrip; crosstalk reduction; interchannel crosstalk; shunt coplanar waveguide; single-ended laser driver; two-dimensional VCSEL arrays; Circuit simulation; Coplanar waveguides; Crosstalk; Driver circuits; Gallium arsenide; Heterojunction bipolar transistors; Optical waveguides; Surface emitting lasers; Vertical cavity surface emitting lasers; Waveguide lasers; VCSEL; coplanar waveguide; crosstalk; laser driver; optical interconnect;
Conference_Titel :
Radio-Frequency Integration Technology: Integrated Circuits for Wideband Communication and Wireless Sensor Networks, 2005. Proceedings. 2005 IEEE International Workshop on
Print_ISBN :
0-7803-9372-4
DOI :
10.1109/RFIT.2005.1598872
