Photodigm's device uses an edge-emitting epitaxial material structure (AlInGaAs/InP) and relies on first and second order gratings for the DBR reflectors and the outcoupler.
"This represents a significant breakthrough for Photodigm," said John
Spencer, president and CEO. "For the first time we have shown that a small outcoupler grating can deliver a significant amount of power into single-mode fiber. With this unique semiconductor laser architecture, we expect to provide major improvements in the cost and performance of a wide range of photonic devices in the enterprise and access markets."