Synchronization technology is one of the key technologies in high speed digital communication systems. The bit rate of an EPON system reaches 1.25 GB/s. The receiver in OLT must work in burst mode. Traditional phase-locked-loop technology can not work perfectly in this case and other burst synchronization technologies may be either difficult or expensive to realize such function. In this paper, a Single Bit Burst Synchronization (SBBS) technology, which solves the problems mentioned above, is presented. Because this method gives up the key words detection, it is independent of the protocol used. So it can be used in any PON systems, such as Ethernet PON, ATM-PON, etc. In order to analyze the performance of SBBS technology, we implement a 1.25 GB/s EPON burst receiver as an example, and the results of computer simulation are also provided.