The Overall Architecture Design Of The Tunable XFP Optical Transceiver

The tunable XFP module (10G Small Form Factor Pluggable) is a hot-pluggable, wavelengthtunable optical transceiver. It supports the distribution of dynamic wavelength and improves theflexibility in the optical network, so that it is suitable for the network transmission end. Itcommonly supports SONET OC-192,10G Ethernet,10G Fiber Channel and G.709connection. Itwill be widely used in the new generation of optical transceiver module.This thesis is investigated and developed as the first stage of Nanjing “321” leading of thetechnology entrepreneurship project, titled “The tunable laser device and the tunable XFP opticaltransceiver”. It is mainly focused on the overall architecture design and simulation. In this paper,the technology of the tunable XFP is investigated, the structure design is presented and thesimulation analysis is conducted. The contents of the paper include:1、The background and significance of the tunable XFP optical transceiver is investigated, andthe recent work on the XFP optical transceivers at home and abroad is reviewed and summarized;2、The tunable XFP optical transceiver technologies and the overall architecture design arepresented, mainly on the structure composition and the working principle of the transmittingsections, the receiving sections and the digital diagnosis. In addition, the circuit model of each partis designed;3、An innovative narrow linewidth tunable laser technology with an external cavity is proposed,which cascades two FP canvities based on the cursor effect to realize the narrow linewidth output ina wide tuning range. The correctness and validity of the method are proved by the Matlabprogramming simulation. Therefore, the wavelength of the XFP optical transceiver is tunable.4、The performance of the proposed tunable XFP optical transceiver is tested by simulating thetransmitting sections, the receiving sections and the whole module system using Optisystem7.0software. The test results meet the requirements in the321project specification. In addition, RZ,NRZ, CSRZ, ODB and MDRZ five different modulation formats are adopted to the system forperformance comparison, which provides the reference for the design of the XFP optical transceivertransmission system by analyzing their applicability in the optical transceiver.