Title:
METHOD AND APPARATUS FOR MEASURING LENGTH OF OPTICAL FIBER
Document Type and Number:
WIPO Patent Application WO/2016/045516
Kind Code:
A1
Abstract:
A method and apparatus for measuring the length of an optical fiber, which are used for measuring the length of an optical fiber between a first device and a second device. The method comprises: a measurement device acquires timestamp parameters, wherein the timestamp parameters comprise a first sending timestamp Ta1, a first receiving timestamp Ta2, a second sending timestamp Tb1 and a second receiving timestamp Tb2 (101); and the measurement device determines the length L of the optical fiber according to the timestamp parameters (102), wherein when (Ta2-Tb1)+(Tb2-Ta1)≤T, L=2.5*[(Ta2-T b1)+(Tb2-Ta1)], and when (Ta2-Tb1)+(Tb2-Ta1)>T, L=2.5*[(Ta2-Tb1)+(Tb2-Ta1)-T]. The method and the apparatus do not depend on dedicated measurement instruments such as an OTDR, an OFDR and an OCDR, simplify the measurement process, and help to reduce measurement cost.
Inventors:
YIN JIAN (CN)
HE FAN (CN)
HE FAN (CN)
Application Number:
PCT/CN2015/089539
Publication Date:
March 31, 2016
Filing Date:
September 14, 2015
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G01B11/02
Foreign References:
| CN101441070A | 2009-05-27 | |||
| CN102494617A | 2012-06-13 | |||
| JP2004064494A | 2004-02-26 | |||
| US5446533A | 1995-08-29 | |||
| CN102142891A | 2011-08-03 |
Other References:
See also references of EP 3190382A4
Download PDF: