Dragging type acoustic sensitive optical cable

• Main Authors: XIANG DECHENG, ZHU ZHIYUAN, ZHU XIAORAN, PAN JIALE, ZHANG GUANGBEI, LI XINXIN, TU FENG, LIANG WEI, PAN QUANZI
• Format: Patent
• Language: Chinese; English
• Published: 31.10.2023
• Subjects: MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES; MEASURING; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; TESTING

The invention discloses a towed acoustic sensitive optical cable, and relates to the field of optical cables. The towed acoustic sensitive optical cable provided by the invention comprises a cable core layer and an elastic sheath layer from inside to outside, and a groove is spirally formed in the peripheral surface of the cable core layer; a sound sensing optical fiber is arranged in the groove; elastic glue is filled between the groove and the sound sensing optical fiber; the Young modulus M5 of the elastic glue after curing is 0.56 Gpa to 0.85 Gpa; the elastic modulus of the sound sensing optical fiber is 0.5 Gpa to 0.8 Gpa; the elastic modulus of the cable core layer ranges from 0.55 Gpa to 0.95 Gpa. The towed acoustic sensitive optical cable is longer in transmission distance and better in sound pressure sensitivity. 本发明公开了一种拖曳型声敏感光缆，涉及光缆领域。本发明提供的拖曳型声敏感光缆，由内及外包括缆芯层、弹性护套层，所述缆芯层外周面螺旋设置有凹槽；所述凹槽内部设置有声传感光纤；所述凹槽与声传感光纤之间填充有弹性胶水；所述弹性胶水的固化后杨氏模量M5为0.56Gpa～0.85Gpa；所述声传感光纤的弹性模量为0.5Gpa～0.8Gpa；所述缆芯层的弹性模量为0.55Gpa～0.95G