Title :
Thin film filter-embedded triplexing-filters based on directional couplers for FTTH networks
Author :
Jeong Hwan Song ; Kyoung-Youm Kim ; Jaegeol Cho ; Dongkyoon Han ; Joohoon Lee ; Yu Sheop Lee ; Suntae Jung ; Yunkyung Oh ; Dong-Hoon Jang ; Kyung Shik Lee
Author_Institution :
Telecommun. R&D Center, Samsung Electron. Co. Ltd., Gyeonggi-Do, South Korea
Abstract :
We designed and experimentally demonstrated a thin film filter (TFF)-embedded directional coupler-type triplexing-filter on the planar-lightwave-circuit platform. The triple-play multiplexing was significantly simplified by using one TFF. The 1.31- and 1.55-μm lights were designed to be divided after passing the directional coupler by half-cycle and full-cycle coupling actions, respectively. The 1.49-μm light was reflected by a TFF inserted in a trench on the directional coupler. The insertion losses of fabricated triplexing-filters were less than 2.0 dB with bandwidths of 20 nm. The newly proposed triplexing-filter provides a cost-effective high-performance solution for fiber-to-the-home networks.
Keywords :
optical communication equipment; optical design techniques; optical directional couplers; optical fibre subscriber loops; optical filters; optical losses; optical planar waveguides; thin film devices; wavelength division multiplexing; 1.31 mum; 1.49 mum; 1.55 mum; FTTH networks; directional couplers; fiber-to-the-home networks; filter design; full-cycle coupling action; half-cycle coupling action; insertion losses; optical planar waveguides; planar-lightwave-circuit platform; thin film filter; triple-play multiplexing; triplexing filters; Directional couplers; Optical fiber subscriber loops; Optical films; Optical filters; Optical interferometry; Optical network units; Optical sensors; Passive optical networks; Transceivers; Transistors; Directional couplers; optical planar waveguides; thin film filters (TFFs); triplexers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.851921
