Mun-Kue Park

Operation of 1550-nm electroabsorption-Modulated laser at 40/spl deg/C for 10-gb/s, 40-km transmission

Semicooled operation at 40/spl deg/C of electroabsorptive modulator integrated laser (EML) for intermediate reach communication has been demonstrated. Reproducible operation at the elevated temperature was achieved through a device parameter optimized based on the temperature dependence of the dc characteristics of EML and a design of multi-quantum-well structure providing both relevant output power and high-frequency bandwidth at 40/spl deg/C. Good eye pattern and near zero chirp with the average power over 0 dBm are obtained at 40/spl deg/C, with an estimated lifetime over 20 years.

14.3: Distinguished Paper: White Point Calibration of Color Sequential Mobile Projector

Color sequential RGB LED driving architecture becomes popular for mobile projectors of which the output are under 10 lumens. One of the difficulties of color sequential projector lies in how to make white balance by mixing RGB color. LED bins and coupling tolerance are diverse so that they have sensitive effects on color temperature distribution. In this paper, the analyses of color temperature distribution and a practical calibration method will be presented.