For lasers with tightly controlled wavelengths， approximately how far apart are the centers of adjacent wavelengths when 100 GHz spacing is used in a DWDM system？ （）
- A、 0.4 nanometers
- B、 0.6 nanometers
- C、 0.8 nanometers
- D、 1.2 nanometers
- E、 1.6 nanometers
正确答案:C
答案解析:有
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