What three in combination are factors that can cause four-wave mixing in fiber-optic cables？（）
- A、 low optical powe
- B、 high optical power
- C、 few optical channels
- D、 many optical channels
- E、 low chromatic dispersion
- F、 high chromatic dispersion
- G、 too much power differential in the optical channels
正确答案:B,D,E
答案解析:有
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