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| Power penalty of crosstalk in 1 * 7 cylindrical mixing-rod plastic optical fiber coupler |
| Yang Chun; Sun Xiaohan; Wang Yunming; Zhang Mingde; Ding Dong |
| Dept. of Electronic Eng.,Southeast University Nanjing 210096 China |
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Abstract Power penalty of crosstalk in 1×7 cylindrical mixing-rod plastic optical coupler (1×7 CMRC) is studied. Theoretical model on the relationship between inter-port crosstalk in 1×7 CMRC, power penalty and bit error rate (BER) is built. The model indicates that power penalty induced by the inter-port crosstalk under -20dB is insignificant and can be ignored. Experimental measurement of the 1×7 CMRC showing that the inter-port crosstalk is lower than -23dB, the inter-port crosstalk can be further lowered by about 5dB as the mismatched end-face of the mixing-rod is coated with optical absorb materials.
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Received: 24 November 2000
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2002, Vol. 24 
