What is the wavelength allocation for video distribution in broadband PON (BPON) access systems?

In broadband Passive Optical Networks (BPON) access systems, the wavelength allocation for video distribution is specifically designated in the range of 1,550 to 1,560 nm. This allocation is part of the ITU-T G.983 standard, which defines the specifications for broadband systems to ensure compatibility and optimal performance in delivering various services, including video.

The choice of this wavelength range is particularly significant because it falls within the low-loss region of optical fiber, providing efficient signal transmission with minimal attenuation. This enhances the quality of video signals over long distances. Additionally, the 1,550 to 1,560 nm range is often utilized because it can effectively accommodate video services alongside data and voice services in a shared infrastructure, thus optimizing bandwidth utilization.

Overall, the selection of this wavelength allocation reflects both technical and practical considerations that are crucial for the development and operation of BPON systems, making it the correct choice.