LIGHT SOURCE FOR A WAVELENGTH DIVISION MULTIPLEXED OPTICAL COMMUNICATIONS CAPABLE OF THE HIGH-SPEED TRANSMISSION OF AN OPTICAL SIGNAL USING AN UNPOLARIZED LIGHT SOURCE, AND WAVELENGTH DIVISION MULTIPLEXING PASSIVE OPTICAL NETWORK COMPRISING SAME

摘要

An optical source for wavelength division multiplexed optical network according to the present invention comprises a broadband light source (BLS); an arrayed waveguide grating (AWG) for spectrum-dividing incoherent light outputted from the BLS; a circulator being connected between the BLS and the AWG; and a plurality of un-polarized light sources (UPLS) being respectively connected to the AWG, wherein the incoherent light which is spectrum-divided by the AWG is injected into the plurality of UPLS and thus the plurality of UPLS is wavelength-locked thereto.;In case of using an optical source for wavelength division multiplexed optical network and a wavelength division multiplexed-passive optical network having the same according to the present invention, It is especially possible to lower dramatically the power of incoherent light being injected into a wavelength-locked Fabry-Perot laser diode, while to enable a high transmission speed of 1.25 Gb/s or more, and possible to further lower noise intensity of a light source at given power of the incoherent light.