FIELD: light conduits. SUBSTANCE: the first quartz tube with the first thermal conductivity is formed. The first layer of the shell and the core are precipitated in it. Preliminary tube is formed by heating the first quartz tube, which serves as the second layer of the shell. The second quartz tube with the second thermal conductivity lower than the first thermal conductivity is formed. The preliminary blank is placed in the second tube, and the third layer of the shell is formed from the second tube by heating. The shell thermal conductivity may decrease from its inner surface to the outer one. The shell viscosity may grow in the direction from the optical axis to the blank outer surface. EFFECT: prevented growth of optical loss at manufacture of blank of fibre-optic light conduit and withdrawal of fibre from it. 9 cl, 7 dwg, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| OPTICAL FIBER BILLET HAVING A BARRIER FOR RADICAL "OH" AND METHOD OF ITS MANUFACTURE | 2000 |
|
RU2230044C2 |
| METHOD OF MANUFACTURING OPTICAL BACKING AND DEVICE FOR ITS EMBODIMENT | 1997 |
|
RU2134437C1 |
| OPTICAL FIBER BLANK WITH OH BARRIER (VERSIONS) AND METHOD OF ITS MANUFACTURE | 1999 |
|
RU2194025C2 |
| METHOD OF PRODUCING LIGHT GUIDES BASED ON DEUTERIUM-ALLOYED QUARTZ GLASS | 2014 |
|
RU2546711C1 |
| METHOD OF MAKING LIGHT GUIDES BASED ON LOW-OPTICAL LOSS QUARTZ GLASS | 2011 |
|
RU2462737C1 |
| COOLING DEVICE USED IN PRODUCTION OF OPTICAL FIBRE MATERIAL | 1997 |
|
RU2138452C1 |
| METHOD OF MAKING SINGLE-MODE FIBRE-OPTICAL WAVEGUIDES WHICH RETAIN RADIATION POLARISATION | 2009 |
|
RU2396580C1 |
| LARGE-SIZE PIPE OF QUARTS GLASS, LARGE-SIZE STOCK OF QUARTS GLASS, MANUFACTURE OF PIPE AND STOCK, OPTICAL FIBER OF QUARTS GLASS | 1993 |
|
RU2096355C1 |
| METHOD OF DRAWING OPTICAL FIBER AND DEVICE FOR ITS EMBODIMENT | 1996 |
|
RU2128630C1 |
| MANUFACTURING METHOD OF PHOTOREFRECTIVE LIGHTS | 2017 |
|
RU2657323C1 |
