POLARIZATION MAINTAINING OPTICAL FIBER AND BIDIRECTIONAL OPTICAL TRANSMISSION DEVICE

• Main Author: GOI KAZUHIRO
• Format: Patent
• Language: English; Japanese
• Published: 24.05.2018
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; TRANSMISSION

PROBLEM TO BE SOLVED: To make common a constitution in transmitting and receiving units used in a bidirectional optical transmission device.SOLUTION: A bidirectional optical transmission device 10 comprises optical waveguide elements 1a and 1b and a polarization maintaining optical fiber 6 for connecting them to each other. The optical waveguide elements 1a and 1b have substrates 2a and 2b, optical transmitting parts 3a and 3b, optical receiving parts 4a and 4b, and polarization multiplexing/demultiplexing parts 5a and 5b, respectively. An orientation of a slow axis of the polarization maintaining optical fiber 6 relative to the substrate 2a at a connection part to the optical waveguide element 1a and an orientation of a slow axis of the polarization maintaining optical fiber 6 relative to the substrate 2b at a connection part to the optical waveguide element 1b cross nearly orthogonal with each other.SELECTED DRAWING: Figure 1 【課題】双方向光伝送装置に用いられる送受信ユニットの構成を共通化する。【解決手段】双方向光伝送装置１０は、光導波路素子１ａ、１ｂと、これらを接続する偏波保持光ファイバ６と、を備える。光導波路素子１ａ、１ｂはそれぞれ、基板２ａ、２ｂと、光送信部３ａ、３ｂと、光受信部４ａ、４ｂと、偏波合分波部５ａ、５ｂと、を有する。光導波路素子１ａとの接続部における偏波保持光ファイバ６の基板２ａに対するスロー軸の向きと、光導波路素子１ｂとの接続部における偏波保持光ファイバ６の基板２ｂに対するスロー軸の向きと、は互いに略直交している。【選択図】図１