Title:
OPTICAL FIBER PREFORM BASED ON CONTINUOUS FUSED QUARTZ BUSHING, AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/177352
Kind Code:
A1
Abstract:
Provided are an optical fiber preform based on a continuous fused quartz bushing, and a manufacturing method therefor. The manufacturing method comprises: preparing an optical fiber core rod with a core layer and an inner cladding layer from inside to outside by using a VAD process; depositing a barrier layer loose body containing a Sb2O3-F mixture on the outer portion of the optical fiber core rod by using an OVD process, and then performing a sintering treatment to obtain a synthetic core rod; and combining the synthetic core rod and a continuous fused quartz bushing by using an RIC process to obtain the optical fiber preform. The diameter of the preform can reach 211 mm, the drawing length of a single preform can reach 2920 km, the attenuation of a drawn optical fiber at 1310 nm is as low as 0.271 dB/km, the attenuation coefficient at 1383 nm is as low as 0.245 dB/km, the attenuation coefficient at 1550 nm is as low as 0.145 dB/km, the mode field diameter at 1310 nm is 8.1 μm to 9.2 μm, and the optical cable cut-off wavelength is 1251 nm to 1271 nm.
Inventors:
MO SIMING (CN)
LI FAN (CN)
SUI LIHONG (CN)
ZHANG GUODONG (CN)
ZHOU LI (CN)
LI XIANG (CN)
LI FAN (CN)
SUI LIHONG (CN)
ZHANG GUODONG (CN)
ZHOU LI (CN)
LI XIANG (CN)
Application Number:
PCT/CN2019/114350
Publication Date:
September 10, 2020
Filing Date:
October 30, 2019
Export Citation:
Assignee:
JIANGSU ETERN OPTICAL FIBER TECH CO LTD (CN)
International Classes:
C03B37/018
Foreign References:
| CN110028235A | 2019-07-19 | |||
| CN102249533A | 2011-11-23 | |||
| CN102320732A | 2012-01-18 | |||
| CN101811822A | 2010-08-25 | |||
| CN103553320A | 2014-02-05 | |||
| US5837334A | 1998-11-17 |
Attorney, Agent or Firm:
SUZHOU RUIHAO INTELLECTUAL PROPERTY AGENCY (CN)
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