Transmission of Two Optical Signals Through the Fibber in Opposite Directions Using PLC Splitters—Practical Measurements

Abstract

In this study, the use of PLC (Planar Lightwave Circuit) splitter in bi-directional WDM optical systems instead of the standard WDM (Wavelength Division Multiplex) splitters is theoretically described and practically confirmed in real telecommunications environment. The transmission of two optical signals in opposite direction over a single mode fiber is tested at slightly spaced wavelengths. The insertion and separation of opposite optical signals are realized using two 1:2 PLC splitters. The measurements are successfully completed for two different lengths of optical fibers (8055 and 61091 m). The proposed solution is cost-effective and flexible, with a wide temperature range covering a broad band of operating wavelengths.