Thank you for your answer.
From your answer and the handbook of the stratix II GX(the transceiver supports data rate from 600MHz to 3.125GHz), that means I can recover the clock of 1Gbps bursty data stream through transceiver using maybe only 100MHz refclk. And I think the
dk-pcie-2sgx90n(http://www.altera.com.cn/products/devkits/altera/kit-pciexpress_s2gx.html?f=devkt&k=g2) maybe a good dev board for realizing my design.
Now I have a another question. If the bursty input data rate is 1Gbps, what's the value should the refclk be? In an another word, what's the relationship between input data rate and refclk?
And what's the price of the
dk-pcie-2sgx90n now? If it is too dear for me, is there any other cheap choice or replacement which can fullfil my request(recover 1Gbps bursty optical data stream)?