OPTICAL LINE NETWORK SYSTEM, OPTICAL TRANSMISSION DEVICE AND OPTICAL TRANSMISSION METHOD

• Main Authors: KATAYAMA MASARU, GYODA KATSUTOSHI, NAKAGAWA MASAHIRO, MATSUDA TOSHIYA, HATTORI KYOTA
• Format: Patent
• Language: English; Japanese
• Published: 16.11.2017
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

PROBLEM TO BE SOLVED: To realize both communication between host optical transmission devices receiving more than one continuous signals by one burst receiver, and communication between subordinate and host optical transmission devices, without increasing transmission delay of signal and bandwidth consumption, and without increasing the manufacturing cost of the optical transmission devices.SOLUTION: In an optical line network system 40, multiple control entities OSUs 51a-51c of optical line termination devices are connected with multiple ONUs 53a-53c becoming objects for the control entities by an optical fiber 50, and a reception processing sections 62 are provided in the OSU 51a-51c or on the outside thereof. The reception processing section 62 performs burst processing for receiving and separating continuous signals Y11a, Y11b of different wavelengths, transmitted from more than one other OSUs 51a, 51b during communication between multiple OSUs, and on which data was superposed to become different position at each reception time, and extracting only the data part addressed to the OSU51c in each continuous signals Y11a, Y11b.SELECTED DRAWING: Figure 1 【課題】２つ以上の連続信号を１つのバースト受信機で受信する上位の光伝送装置間通信と、下位と上位の光伝送装置間通信との双方を、信号の伝送遅延及び帯域消費の増加が生じないように行うことができ、この通信を光伝送装置の製作コストが高くならないように実現する。【解決手段】光集線ネットワークシステム４０は、光回線終端装置である制御主体の複数のＯＳＵ５１ａ〜５１ｃと、制御主体に対して客体となる複数のＯＮＵ５３ａ〜５３ｃとが光ファイバ５０で接続されており、ＯＳＵ５１ａ〜５１ｃの外部又は内部に受信処理部６２を備える。受信処理部６２は、複数のＯＳＵ間通信時に、２以上の他ＯＳＵ５１ａ，５１ｂから送信されてきた、各々受信時に異なる位置となるようにデータが重畳された異波長の各連続信号Ｙ１１ａ，Ｙ１１ｂを受信して分離し、各連続信号Ｙ１１ａ，Ｙ１１ｂ中のＯＳＵ５１ｃ宛のデータ部分のみを抽出するバースト化処理を行う。【選択図】図１