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8 February 2017 Low-cost TO-CAN package combined with flexible and hard printed circuit boards for 25 - Gb / s optical subassembly modules
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Abstract
A low-cost transistor outline-CAN (TO-CAN) package, which is combined with flexible printed circuit board (PCB) and hard PCB, has been developed for a 25 - Gb / s optical subassembly module. On the flexible PCB, the transmission line structure used top ground microstrip line, and the wider transmission bandwidth can be obtained. Using ground pads and ground notch technologies, the impedance of connection between flexible PCB and hard PCB was designed to match with the impedances of signal traces of the flexible and hard PCBs. In the TO-CAN package, a TO-46 header was used, and the header needs to closely connect with the flexible PCB. The bandwidth of TO-46 package combined with flexible and hard PCBs can achieve above 23 GHz. The clear 25 - Gb / s transmission eye diagram was also measured, and the rise time, fall time, and Q -factor of the eye diagram are 13.78, 13.56 ps, and 8.76, respectively. The TO-46 package combined with flexible and hard PCBs has been verified to be suitable for application in 25 - Gb / s optical subassembly modules.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Jau-Ji Jou, Jau-Ji Jou, Tien-Tsorng Shih, Tien-Tsorng Shih, Cheng-Ying Wu, Cheng-Ying Wu, Zhe-Xian Su, Zhe-Xian Su, } "Low-cost TO-CAN package combined with flexible and hard printed circuit boards for 25 - Gb / s optical subassembly modules," Optical Engineering 56(2), 026108 (8 February 2017). https://doi.org/10.1117/1.OE.56.2.026108 . Submission: Received: 30 November 2016; Accepted: 20 January 2017
Received: 30 November 2016; Accepted: 20 January 2017; Published: 8 February 2017
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