MULTIGIGABIT MULTICHANNEL OPTICAL INTERCONNECTION MODULE FOR BROAD-BAND SWITCHING-SYSTEM

This paper describes optical transmitter and receiver modules for pack age-to-package interconnection in broadband switching networks such as an asynchronous transfer mode snitch fabric, These modules, which inc lude the multiplexer and demultiplexer, can reduce the number of conne ctions and the problem of skew between links, Five-channel optical tra nsmitter and receiver modules were fabricated and demonstrated at 2.8 Gbit/s with a power dissipation of 4.5 W per channel, Moreover, temper ature-insensitive optical interconnection was successfully demonstrate d by driving a laser with a constant bias current over the threshold a nd hy deducting the optical signal offset The output power of the tran smitter module was -4.2 dBm. Nonuniformity of the transmitter output p owers across the range of optical channels was <2.1 dB, Receiver sensi tivity for a bit error rate of 10(-11) was -9.3 dBm, Nonuniformity of the receiver sensitivities was <1.5 dB, The power penalty of the recei ver sensitivity due to crosstalk was 1 dB, The connection distance was >250 m.