Abstract
A 3.5-Gb/s burst-mode laser driver with automatic power control (APC) fabricated in 0.25 /spl mu/m 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.
| Original language | English |
|---|---|
| Title of host publication | IEEE International Symposium on Circuits and Systems (ISCAS), 2005 |
| Place of Publication | Piscataway |
| Publisher | IEEE |
| Pages | 5501-5504 |
| Number of pages | 4 |
| ISBN (Print) | 0780388348 |
| DOIs | |
| Publication status | Published - 25 Jul 2005 |
Keywords
- power lasers
- power control
- power supplies
- driver circuits
- CMOS process
- electric variables measurement
- semiconductor device measurement
- optical modulation
- signal analysis
- joining process