在光副载波复用(SCM)系统中若使用DOP作为DGD的监测信号将会遇到灵敏度低的问题。

The problem of low sensitivity will become seriously if DOP is used as the monitor signal of DGD in SCM system.

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第三，对采用不同调制格式（包括幅移键控和二进制相移键控）的光副载波复用（OSCM）系统中，PMD引起的功率代价进行了量化。

Thirdly, we quantify the power penalty caused by the PMD in optical subcarrier multiplexing (OSCM) system with amplitude shift keying (ASK) and binary phase shift keying (BPSK).

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该方案利用频移键控频分复用（FSK FDM）技术进行声频副载波调制，通过光强度调制实现远程在线EDFA监控信息随主信号的传输。

In the scheme, FSK-FDM technique is used in subcarrier modulation, and the EDFA's supervisory information is transmitted by optical intensity modulation.

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