A WAVELENGTH DIVISION MULTIPLEXED-PASSIVE OPTICAL NETWORK CAPABLE OF HIGH-SPEED TRANSMISSION OF AN OPTICAL SIGNAL BY USING MODULATION FORMAT HAVING HIGH SPECTRAL EFFICIENCY

摘要

The present invention discloses a wavelength-division multiplexing passive optical network (WDM-PON) capable of high-bandwidth transmission for optical signals by using modulation format having high spectral efficiency. The WDM-PON according to the present invention provides a larger capacity and higher bandwidth transmission economically (at lower costs) by using a modulation format where spectral efficiency (a transmission bit number per a unit band width) is high, while using a low noise part of a light source.