Patent ID: 8078061
Filing Date: 2011-12-13
Classification: H04L

Abstract:
1. A wavelength-division multiplexing passive optical network capable of high-bandwidth transmission for optical signals comprising: a low noise broadband light source (BLS) which is oscillating in a plurality of oscillating modes; a first circulator and a second circulator respectively being connected to the low noise BLS; a first arrayed waveguide grating (AWG) being positioned at an optical line termination (OLT) and having n-numbered output ports; n-numbered optical transceivers (TRx) (OLT a second AWG being positioned at a remote node (RN) and having n-numbered output ports; a single mode fiber (SMF) being used for transmission of signals transmitted through the first AWG and the second AWG; a first wavelength division multiplexing (WDM) filter being connected to the first circulator, the second circulator, and the first AWG, respectively; a second WDM filter being connected to the first circulator, the second circulator, and the SMF, respectively; n-numbered optical transceivers (TRx) (ONT n-numbered SMFs for separate transmission being connected between the second AWG and the n-numbered optical transceivers (TRx) (ONT wherein each of the numbered optical transceivers (TRx) (ONT a WDM filter into which an optical signal, split through the first AWG and the second AWG, is inputted; an optical transmitter (Tx) being connected to the WDM filter and for transmitting optical signals having different wavelength bands; and an optical receiver (Rx) being connected to the WDM filter and for receiving the optical signals having different wavelength bands, wherein the optical transmitter (Tx) comprises: