This BeamLab demo shows a propagation model consisting of a straight waveguide section followed by a multicore waveguide section that breaks out the single core to a two-ring multicore structure consisting of four inner cores regularly arranged on a circle of radius 17 um and 4 outer. This BeamLab demo shows a propagation model consisting of a straight waveguide section followed by a multicore waveguide section that breaks out the single core to a two-ring multicore structure consisting of four inner cores regularly arranged on a circle of radius 17 um and 4 outer. Live Demonstration of Optical Connection Switching by APN-Transceiver and No Wavelength Dependance APN-Splitter for Distributed Access Network Yuya Saito, Naoki Umezawa, Yasuhiro Takizawa, Manabu Kotani, Shinya Ito, Shinichi Koyama, Yasuhiro Tanaka, and Daisuke Umeda Y. In a Passive Optical Network (PON), a single optical fiber carries massive amounts of data using light. Instead of running separate cables for each user or device, a central piece of equipment—called an Optical Line Terminal (OLT) —sends data down the line to multiple Optical Network Terminals. A fiber-optic splitter, also known as a beam splitter, is based on a quartz substrate of an integrated waveguide optical power distribution device, similar to a coaxial cable transmission system. The optical network system uses an optical signal coupled to the branch distribution. The fiber optic. Bandwidth is shared amongst customers in a PON, and the bandwidth received by a customer is not related to the power received at the optical network terminal (ONT) as long as the power is high enough so the ONT can operate.