FIELD: physics.
SUBSTANCE: optical cable has a metal tube, inside of which there is optical fibre. The optical cable has at least one metal tube inside of which there is at least one optical fibre with given excess optical fibre length (EFL). The metal tube is plastically deformed and shorted by a given value (St), which is greater than EFL. The tube is plastically deformed after shortening to regulate its length so as to achieve the given EFL value. Optical cable made using said method has local value of excess optical fibre length (EFL), which varies by less than 0.2% along the longitudinal direction with respect to average EFL value of the cable.
EFFECT: obtaining constant EFL value on the entire length of the cable for protection of the optical fibre from increase of attenuation and mechanical failure, arising from tension in the cable during use or installation.
50 cl, 7 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| OPTICAL CABLE AND METHOD FOR PRODUCTION THEREOF | 2014 |
|
RU2669545C2 |
| ELECTRIC CABLE WITH STRAIN-GAGE AND CONTROL SYSTEM AND METHOD FOR STRAIN DETECTION IN AT LEAST ONE ELECTRIC CABLE | 2009 |
|
RU2510904C2 |
| ELECTRIC CABLE WITH STRAIN-GAGE AND CONTROL SYSTEM AND METHOD FOR STRAIN DETECTION IN AT LEAST ONE ELECTRIC CABLE | 2009 |
|
RU2510865C2 |
| METHOD TO MEASURE LENGTH OF ELECTRIC CABLE, WHICH USES OPTIC FIBRE ELEMENT AS SENSOR | 2010 |
|
RU2547143C2 |
| METHOD FOR DETECTING TWIST IN CABLE, POWER SUPPLY CABLE WITH TWISTING SENSOR AND METHODS OF MAKING SUCH CABLE | 2012 |
|
RU2616766C2 |
| PRELIMINARY ASSESSMENT OF THE QUALITY OF A FIBRE OPTIC CABLE BASED ON MACHINE LEARNING DURING THE MANUFACTURING PROCESS | 2020 |
|
RU2798082C1 |
| SYNTHETIC ROPE OR CABLE (EMBODIMENTS) | 2020 |
|
RU2817585C2 |
| METHOD FOR MANUFACTURING OF RUGGEDISED MINIATURE HEAT-RESISTANT OPTICAL CABLE AND CABLE MANUFACTURED BY THIS METHOD | 2013 |
|
RU2568420C2 |
| SYNTHETIC FIBRE CABLE WITH ELONGATION AND HEATING INDICATION | 2020 |
|
RU2785870C1 |
| WATER-RESISTANT CABLE | 1999 |
|
RU2212722C2 |
