Electromagnetic shielding of plastic material in laser diode modules

Author

Chiu, S.K. ; Cheng, J.Y. ; Jou, W.S. ; Jong, G.J. ; Wang, S.C. ; Wang, C.M. ; Lin, C.S. ; Wu, T.L. ; Cheng, W.H.

Author_Institution

Inst. of Electr-Opt. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan

fYear

2001

fDate

2001

Firstpage

645

Lastpage

647

Abstract

Electromagnetic shielding of plastic materials in laser modules was studied experimentally and theoretically. The conductive carbon fiber fillers into plastics to produce electrically conductive composites were proposed for the evaluation of electromagnetic interference (EMI) shielding effectiveness (SE). The different volume fractions of conductive carbon fiber fillers ranging from 5, 10, 20, and 30% were used. The SE of conductive plastics was measured to be 45 dB at the low frequency of 30 MHz and 60 dB at the high frequency of 1 GHz. The measured results are in good agreement with the calculated results. The laser modules have a transmission speed up to 622 Mb/s and more than 1 mW fiber output power. With these excellent SE and good optical characteristics, plastic MiniDIL laser modules are suitable for use in low-cost OC-12 lightwave transmission systems

Keywords

carbon fibre reinforced plastics; conducting materials; electromagnetic interference; electromagnetic shielding; modules; plastic packaging; semiconductor lasers; 1 mW; 30 MHz to 1 GHz; 622 Mbit/s; MiniDIL; OC-12 lightwave transmission systems; carbon fiber filler; electrically conductive composite; electromagnetic interference shielding effectiveness; laser diode module; optical characteristics; plastic material; volume fraction; Carbon dioxide; Conducting materials; Diode lasers; Electromagnetic interference; Electromagnetic shielding; Fiber lasers; Frequency; Laser theory; Optical materials; Plastics;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Components and Technology Conference, 2001. Proceedings., 51st

Conference_Location

Orlando, FL

ISSN

0569-5503

Print_ISBN

0-7803-7038-4

Type

conf

DOI

10.1109/ECTC.2001.927797

Filename

927797