WDM Passive Optical Networks With Wavelength Sharing

A Study of various Trends and Enabling Technologies in Radio over Fiber (RoF) Systems

“…The WDM-PON has superior performance than that of a conventional optical access network as it elucidates the external plant and the intricacy of the optical network unit (ONU) [17]. The basic structure of WDM-RoF-PON is shown in Fig.2 M a n u s c r i p t up-conversion scheme has been proposed [22].…”

Highly reliable wavelength‐reuse wavelength‐division multiplexing semipassive optical access network architecture with double cover area and high network capacity

“…In this way, the cost of light sources is saved, and colorless ONU can be achieved. In the optical line terminal, Reference come up with the idea of wavelength sharing. These schemes can save half of the light source cost.…”

Novel wavelength-reuse WDM-PON architecture with double cover area and high network capacity

“…One of the reasons that keeps WDM-PON form being deployed is the absence of cheap and stable multi-wavelength light source. To address this problem, many schemes have been proposed [1][2][3][4][5][6][7][8]. For example, reference [1] [2] employs RSOA (Reflective Semiconductor Optical Amplifier) for upstream modulation at ONU (optical network unite), by which, upstream data can be modulated on the downstream signals.…”