Title :
A 10 Gb/s, 120/60 mA laser/modulator driver IC with dual-mode actively matched output buffer
Author :
Ransijn, H. ; Salvador, G. ; Daugherty, D. ; Gaynor, K.
Author_Institution :
Lucent Technol., Reading, PA, USA
Abstract :
A Laser Driver IC for 10 Gb/s - SONET OC-192 - fiber optic transmitters is described. Depending on the user application, the IC is capable of driving up to 120 mA of current into a laser diode or 60 mA into an electro-absorption or Mach-Zehnder modulator with rise and fall times below 25 pS. In both cases the driver provides a DC-coupled back termination of either 25 or 50 /spl Omega/, implemented by means of a novel dual-mode actively matched output buffer which allows the power consumption of the IC to remain at a minimum and which makes the IC most suitable for co-packaging with uncooled lasers and electro-absorption modulators. The driver is fabricated in a 0.25 /spl mu/m production GaAs PHEMT process with substrate thru vias, thin film resistors and MIM capacitors.
Keywords :
HEMT integrated circuits; III-V semiconductors; SONET; buffer circuits; driver circuits; electro-optical modulation; gallium arsenide; optical fibre communication; optical transmitters; semiconductor lasers; 0.25 micron; 10 Gbit/s; 120 mA; 60 mA; DC-coupled back termination; GaAs; GaAs PHEMT process; MIM capacitor; Mach-Zehnder modulator; SONET OC-19; co-packaging; dual-mode actively matched output buffer; electro-absorption modulator; fiber optic transmitter; laser diode; laser driver IC; substrate thru via; thin film resistor; Application specific integrated circuits; Diode lasers; Energy consumption; Fiber lasers; Impedance matching; Optical fibers; Optical transmitters; Photonic integrated circuits; Power lasers; SONET;
Conference_Titel :
GaAs IC Symposium, 2000. 22nd Annual
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-5968-2
DOI :
10.1109/GAAS.2000.906323
