What two descriptions best define DWDM？ （）
A: a WDM system that is compatible with EDFA technology
B: an optical technology for transmitting up to 16 channels over multiple fiber strands
C: an optical technology for transmitting up to 32 channels over multiple fiber strands
D: a technology for transmitting multiple optical signals using less sophisticated transceiver designthen CWDM
E: a technology for transmitting more closely packed optical signals using more sophisticatedtransceiver designs than CWDM
A: a WDM system that is compatible with EDFA technology
B: an optical technology for transmitting up to 16 channels over multiple fiber strands
C: an optical technology for transmitting up to 32 channels over multiple fiber strands
D: a technology for transmitting multiple optical signals using less sophisticated transceiver designthen CWDM
E: a technology for transmitting more closely packed optical signals using more sophisticatedtransceiver designs than CWDM
举一反三
- When using a connector for optical fiber connection, if the connector is not continuous, it will cause . A: Optical power cannot be transmitted B: Fresnel reflection of optical power C: Scattering loss of optical power D: Part of the scattering loss of optical power or return to the transmitting end in the form of reflection
- The Optical Path technology can improve the transmission capacity of lines and the throughput of nodes at the same time.
- According to , optical fiber movable connectors can be divided into two types: aligning type and non-aligning type. A: Connection method B: Structure C: Optical fiber mutual contact relationship D: Optical fiber type
- People in Europe have had more advanced technology in using wind power than Americans.
- Optical fiber communication refers to: 光纤通信指的是：