MODE EXCHANGER AND MODE EXCHANGE METHOD

To provide a mode converter and a mode conversion method that are suitable for large-capacity communication and can also suppress an increase in GDS.SOLUTION: A mode converter 301 according to the present invention includes a multi-core optical fiber that exchanges optical power between desired mode...

Full description

Saved in:
Bibliographic Details
Main Authors SAITO KUNIMASA, FUJISAWA TAKESHI, NAKAJIMA KAZUHIDE, SAKAMOTO YASUSHI, SATO TAKANORI, SAKAE YUTO, MATSUI TAKASHI
Format Patent
LanguageEnglish
Japanese
Published 26.10.2023
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
Online AccessGet full text

Cover

More Information
Summary:To provide a mode converter and a mode conversion method that are suitable for large-capacity communication and can also suppress an increase in GDS.SOLUTION: A mode converter 301 according to the present invention includes a multi-core optical fiber that exchanges optical power between desired modes. The multi-core optical fiber has a core spacing Λ serving as a super-mode waveguide region, and is given a twist period Λtwist corresponding to between the desired modes. The mode converter 301 is arranged in the middle of a transmission line 50 of an optical transmission system (at a connection point between a transmission line 50-1 and a transmission line 50-2).SELECTED DRAWING: Figure 6 【課題】大容量通信に適し、且つＧＤＳの増加抑圧もできるモード変換器及びモード変換方法を提供することを目的とする。【解決手段】本発明に係るモード変換器３０１は、所望のモード間の光パワーを交換するマルチコア光ファイバを備えており、前記マルチコア光ファイバは、スーパーモード導波領域となるコア間隔Λであること、及び前記所望のモード間に対応する捻じれ周期Λｔｗｉｓｔが付与されていることを特徴とする。光伝送システムの伝送路５０の途中（伝送路５０－１と伝送路５０－２との接続点）にモード変換器３０１が配置される。【選択図】図６
Bibliography:Application Number: JP20220066683