High Speed Connector Design for Applications in Optical Fiber and Ethernet

• Main Authors: Pao-Hsin Hsu, 許葆鑫
• Other Authors: Cheng-Fa Yang
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/06335674872451850366

碩士 === 國立臺灣科技大學 === 電機工程系 === 103 === This thesis proposes two high speed connector designs for applications in optical fiber and Ethernet, respectively. First, the basic characteristics of the connectors and high-frequency theory to support those designs and analyses are introduced. The basic characteristics include connector configurations and structures, mechanical and electrical functions, materials, manufacturing methods, and categories. The high-frequency theories cover impedance matching, time-domain reflection, signal integrity, mixed-mode signals, coupling effects, crosstalk, and propagation delay. Those connectors are designed to have good impedance matching, low transmission loss, and minimal crosstalk. The first design, SFP+ 28G 1X1, is the new type of the small form-factor pluggable (SFP) transceiver connector, which has a data rate up to 28 Gbps. The SFP transceiver is generally used in switches, routers, servers, PON optical network units, etc. The second design is the new generation of the RJ-45, which can increase the total transmission speed to 10 Gbps. Both of them are excellent for applications in high speed Ethernet with the former connected to optical fiber for optical line terminal devices and the latter linked to twisted-pair copper lines for Ethernet end users. Besides, this thesis also performs verification by using an SFP+ 28G test fixture based on TRL calibrations for SFP+ 28G 1X1 connector samples, designs a 4-layer PCB for RJ-45 differential pairs, and develops a method to measure the EMI shielding performance of the connector cage. The contents covered in this thesis are useful for connector designs and may be applied to enhance connector markets.