The design and measurement of 40Gbps Very Short Reach (VSR) parallel optical transmission system are presented.The transmitter and receiver are implemented using Altera Stratix II GX PFGA which has embedded high-speed transceiver.By configuring the high-speed transceiver correctly

using window generator and sharing the window comparator within the deskew module

the hardware area is reduced greatly.Binary search is also employed in the frame synchronization module to raise the circuit speed.Additionally

a 12×3.318Gbps VCSEL transmitter is researched and works correctly.At last

the VSR5 point-to-point measurement is undertaken by connecting the receiver and transmitter via a 7-meter 400MHz·km 62.5 μm multi-mode fiber ribbon and Agilent tester.Under the continuous test of 2 hour

s

a system bit error rate(BER)of lower than 10

-12

is obtained.