Title :
Optical receiver in deep-sub-micrometre CMOS with -28.2 dBm sensitivity at 1.25 Gbit/s
Author :
Schneider, K. ; Zimmermann, H. ; Wiesbauer, A.
Author_Institution :
Inst. for Electr. Meas.s & Circuit Design, Vienna Univ. of Technol., Austria
Abstract :
A transimpedance amplifier (TIA) as preamplifier for optical receivers in passive optical networks designed in a digital 120 nm CMOS technology is described. Varying the open-loop gain of the preamplifier by a factor of 340 is suggested as a solution for the stability problem of this variable gain TIA. Sensitivities of -29.9 dBm at 622 Mbit/s and -28.2 dBm at 1.25 Gbit/s with 1.3 μm light and a bit error ratio of 10-10 are achieved.
Keywords :
CMOS integrated circuits; optical receivers; p-i-n photodiodes; preamplifiers; sensitivity; 1.25 Gbit/s; 1.3 micron; 120 nm; 622 Mbit/s; CMOS technology; TIA; bit error ratio; deep-sub-micrometre CMOS; open-loop gain; optical receiver; passive optical networks; preamplifiers; sensitivity; transimpedance amplifier;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040142
