Design And Implementation Of10Gbps Optical Transceiver

Fiber access technology has play a very important position in the access networkdevelopment, a variety of passive optical access network systems have become a keytechnology for the development of FTTH. To solve this last mile bottleneck, IEEE proposed10G-EPON standard with transfer rate up to10Gbps. This high-speed low-cost accesstechnology compatible with the current EPON standard has become the key to the FTTHdevelopment. In this thesis, we study the key module of10G-EPON system-opticaltransceiver. It completes the conversion of optical-electro and electro-optical, and has beenan indispensable module in physical layer.In this thesis, the optical transceivers are fully compliant with XFP-MSA protocol. Firstwe analysis the working principle of optical transceivers, and give a detailed description ofeach part of the transceiver. Then in contrast of the manufacturer’s reference design, wepropose the design plan of this project.This thesis focuses on the hardware design of XFP optical transceiver. We give adetailed analysis, the difficulties of the design process and the solution to the directmodulation of the laser interface circuit, BIAS-T circuit, clock and data recovery circuit,received optical power detection circuit and control circuit.In this thesis we finish the high-speed PCB design under the guidance of signal integrity.In the theoretical analysis of the transmission line, reflection, crosstalk, power integrity, wefocus on the transmission line impedance matching design, multi-layer circuit board designand board level split power plane formation, these designs are essential steps to protectsignal integrity.In this thesis, we also introduce the software design of the control part of XFP opticaltransceiver. We give the idea of functional analysis and flowchart to the various parts of thesystem initialization and main loop, and each subroutine.After test, the output eye, the output jitters, waveform of the XFP transceiver are allmeet the requirements of the XFP-SMA protocol. We achieve an excellent performance,high-speed optical transceivers.