Câu 26: 4A0-205: Nokia Optical Networking Fundamentals

What is the meaning of first, second, and third window in the optical fiber propagation context?

1. A. These windows correspond to three different minimum and maximum optical power levels used for optical transmission.
2. B. These windows are three different wavelength intervals where the WDM optical transmission occurs. — đáp án hiện tại
3. C. These three windows are three different angles of incidence of the light injected by the laser into the fiber.
4. D. Different optical transmission windows correspond to different safety requirements and rules for the related lasers operating with these windows.