Title :
A 3.5-Gb/s CMOS burst-mode laser driver with automatic power control using single power supply
Author :
Li, Day-Uei ; Huang, Li-Ren ; Tsai, Chia-Ming
Author_Institution :
SoC Technol. Center, Ind. Technol. Res. Inst., Hsinchu, Taiwan
Abstract :
A 3.5-Gb/s burst-mode laser driver with automatic power control (APC) fabricated in 0.25 μm 1P5M CMOS process is presented. With the proposed waveform shaping circuit, the driver could operate under a single 3.3 V power supply without sacrificing output headroom, and it could output 6 mA to 60 mA modulation current with negligible overshoot. Measurements on mounted chips show clear electrical eye diagrams operating over 3.5-Gb/s data rate with typical rise/fall times (20% to 80%) of 84/97 ps. Moreover, an optical eye diagram is also demonstrated by connecting the driver to a 1.25-Gb/s 1310 nm laser diode. The laser turn on/off time is about 30/20 ns, much less than the criterion (512 ns) that the IEEE 802.3ah standard has proposed.
Keywords :
CMOS analogue integrated circuits; driver circuits; optical transmitters; power control; pulse shaping circuits; semiconductor lasers; 0.25 micron; 1.25 Gbit/s; 1310 nm; 20 ns; 3.3 V; 3.5 Gbit/s; 30 ns; 6 to 60 mA; 84 ps; 97 ps; CMOS burst-mode laser driver; IEEE 802.3ah standard; automatic power control; electrical eye diagrams; laser diode; modulation current; optical eye diagram; passive optical network burst-mode transmitters; pulse-width control; waveform shaping circuit; CMOS process; Driver circuits; Electric variables measurement; Joining processes; Optical modulation; Power control; Power lasers; Power supplies; Semiconductor device measurement; Signal analysis;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465882
