PERFORMANCE OF 8-CHANNEL OEIC P-I-N HBT RECEIVER ARRAY IN 8X2.5 GB/S WDM TRANSMISSION-SYSTEM/

The performance of an eight-channel, 2.5 Gb/s OEIC photoreceiver array in an eight-wavelength long-distance WDM testbed is described. The se nsitivity penalties due to crosstalk and transmission are measured, an d the source of crosstalk is investigated, Channel sensitivities range from -25.4 to -26.2 dBm after transmission through 720 km of standard fiber, with transmission penalties ranging from 0.3 dB to 1.0 dB. Whe n the power in each of seven interfering channels is 5 dB above sensit ivity, the maximum cross talk penalty suffered by an individual channe l does not exceed 1 dB, These experiments are the first comprehensive characterization of monolithic receiver arrays for crosstalk performan ce under multichannel operation in a realistic system environment.