| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_292633037460f2a7c683a19ca8d33ddd |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B2203-23
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B2201-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B2201-10 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B37-018
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B37-01807
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03C25-104
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B37-01853
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B37-027
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03B37-012 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C03B37-018
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C03B37-027 |
| filingDate |
2011-06-08^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ea574134b8653a36a3fecd2e861da3a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a1fa906bef68eb50be69ba2a76691f50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_28e74cd54b9c3b4414973238e477a30e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c5e06b10df48272def5bac6819039bd0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_50c02127614f244261026aa40f81d489
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_da53a821a34c29ec7f8d2400a4e8cb21 |
| publicationDate |
2011-12-14^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
KR-20110134329-A |
| titleOfInvention |
Optical fiber base material and optical fiber with improved hydroxyl content and bending loss |
| abstract |
The present invention relates to a method for manufacturing an optical fiber base material by using a crystal chemical vapor deposition (MCVD). The present invention comprises the steps of depositing a soot on the inner wall of the quartz tube to form a cladding layer; Forming a trench region on the clad layer with a lower refractive index than the clad layer; Forming the clad layer again on the trench region; And forming a core layer having a relatively higher refractive index than the clad layer on the clad layer. In the core layer forming step, the temperature in the quartz tube is increased to 1200 while introducing a soot forming gas together with a carrier gas. A soot is formed by heating to a temperature of from 1 ° C. to 1500 ° C., and the soot is deposited on the clad layer; and a temperature of the quartz tube is heated to a temperature of 700 ° C. to 1200 ° C. while introducing a dehydration reaction gas into the quartz tube. A dehydration process for removing hydroxyl (OH) and water from the soot and tube, and a sintering process for sintering and vitrifying the soot by heating the temperature in the quartz tube on which the soot is deposited to a high temperature of 1700 ° C. or higher. Disclosed is a manufacturing method. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20130094519-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111362565-A |
| priorityDate |
2010-06-08^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |