Abstract

A high electromagnetic immunity and low-cost plastic package for a 10-Gb/s optical transceiver module is developed by using a woven carbon-fiber epoxy composite (WCEC). The WCEC package with a thickness of 1.0 mm and 4.8% carbon fiber has a shielding effectiveness (SE) performance of 60 dB at 10 GHz as the package is grounded to the system ground, and the SE can reach approximately 38 dB for the realistic packaged module operated at 10 Gb/s. In addition, the excellent electromagnetic immunity of the package is demonstrated by the eye patterns and the bit-error-rate (BER) test. Under the interference of the radiated noise, the package housing significantly improves the jitter and mask margin performance of the 10-Gb/s signals. Compared with an unpackaged module, it is found that over 4 dB of optical power can be gained to keep the BER at 10^-12 for the packaged optical transceiver modules. This proposed package is suitable for use in low-cost 10-Gb/s lightwave transmission systems with excellent electromagnetic susceptibility (EMS) performance.

© 2006 IEEE

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