TY  - JOUR
T1  - Monitoring of FBG as Elements of Subscriber Access Nodes in TWDM-PON
AU - Morozov, Oleg G. AU - Ali, Mustafa H. 
JO  - Research Journal of Applied Sciences
VL  - 11
IS  - 9
SP  - 776
EP  - 783
PY  - 2016
DA  - 2001/08/19
SN  - 1815-932x
DO  - rjasci.2016.776.783
UR  - https://makhillpublications.co/view-article.php?doi=rjasci.2016.776.783
KW  - Fiber Bragg Grating (FBG)
KW  -Array Waveguide Grating(AWG)
KW  -ODN
KW  -OLT
KW  -PON
AB  - Many efficient monitoring methods were proposed and applicability was demonstrated. One of the proposed methods uses passive components at the subscriber side (a simple FBG) for reflects the monitoring signal that generated in the OLT. The OLT apply simple signal processing steps on the OFDR trace to deduce the Bragg wavelength shift of each FBG in the network. Then calculate the shifting amount that give us the temperature at any place in the network. This functionality provides the monitoring system with the capability of foreseeing the evolution of temperature in the network terminals before some unexpected environmental conditions (high temperature, freezing due to an open remote terminal port. This system can be used in our TWDM-PON to monitor the ODN&ONU efficiently. In this thesis, a study for a Comparison between AWG methods with wide band source and FBG methods with two frequency source.
ER  -