Bit Error Rate Testbed for Multigigabit Optical Communication Network and HighPerformance Optoelectronic Devices

摘要

The opto-electronic development program has moved forward substantially duringthe last year. In the 100GHz receiver program with Wright Patterson Air Force Base, new approaches to the implementation of high speed lasers and detectors have been devised. These structures include transmission lines with phase velocities matched to the group velocity of the optical waveguide to eliminate the limitation of the device capacitance and output impedance. A new process sequence has been developed to minimize parasitic capacitance through the use of the natural oxidation of A1 containing compounds. A phase mask technology has been implemented to produce laser gratings. A complete test mask has been produced to evaluate the traveling wave concept. The SBIR program to produce neural network building blocks with the inversion channel technology is now underway. The Inversion Channel Process technology to build these circuits is identical to the other program although the emphasis here is to produce integrated chips which are coupled by free space transmission. Measurements of the nonlinear index in the fiber of 1.8 x 10(exp -17) m(sup 2)/W have been obtained. The erbium doped fiber laser has produced stable pulse trains of 10ps pulses at data rates of 500MHz. The mode locked sources can now be used with the optical Kerr switches to realize all optical components.