Daniel Ohen Ricketts

P-233: Multimode DBR Laser Operation for Frequency Doubled Green Lasers in Projection Displays

In frequency doubled green lasers for laser scanning micro projectors, the wavelength fluctuations can create low spatial frequency and repeatable image artifacts that significantly degrade the image quality. We demonstrate a technique where the laser gain current is repeatedly reset to zero and the laser phase is randomized, both at high frequency. The image defects are replaced by high spatial frequency content noise that minimizes the detrimental effects in the human vision system.

Experimental demonstration of fast-response spectral power equalizer for reconfigurable WDM optical networks

A fast spectral power equalizer was designed and tested in a reconfigurable optical network testbed. Its response time is ~100 microseconds. Dynamic power fluctuation caused by add/drop switching in reconfigurable optical networks can be compensated by this technology.