Multiwavelength Distributed Feed Back Laser Array Transmitters for OpticalNetwork Technology Consortium Reconfigurable Optical Network Testbed

摘要

We discuss the design, fabrication, and performance of multiwavelength laserarray transmitters that have been used in the reconfigurable optical network testbed for the Optical Network Technology Consortium (ONTC). The experimental 4-node multiwavelength network testbed is SONET/ATM compatible. It has employed multiwavelength DFB laser arrays with 4 nm wavelength spacing for the first time. The testbed has demonstrated that multiwavelength DFB laser arrays are indeed practical and reproducible. For the DFB laser arrays used in such a network the precise wavelength spacing in the array and the absolute wavelength control are the most challenging tasks. We have obtained wavelength accuracy better than + or