Title:
SPUN STRING TENSION MEASUREMENT METHOD FOR OPTICAL FIBER
Document Type and Number:
Japanese Patent JPH04323528
Kind Code:
A
Abstract:
PURPOSE:To measure the spun string tension of an optical fiber directly at high accuracy in a non-contact way. CONSTITUTION:An optical fiber 2 extracted from a string spunning device 2 is vibrated, and the optical fiber 2 can be seen as a vibrating chord. The vibration frequency of the chord is a function of tension, and by detecting the vibration frequency, the tension is calculated. Since the vibration frequency of the optical fiber 2 can be determined by measuring the position of the optical fiber 2 in a non-contact way, a problem of degraded intensity due to the contact to an uncoated optical fiber can be avoided.
Inventors:
FUJIMAKI MUNEHISA
TSUJI TOSHIYUKI
SAWADA KATSUMI
TSUJI TOSHIYUKI
SAWADA KATSUMI
Application Number:
JP11946591A
Publication Date:
November 12, 1992
Filing Date:
April 22, 1991
Export Citation:
Assignee:
FUJIKURA LTD
International Classes:
C03B37/027; C03B37/025; G01L5/10; G02B6/00; (IPC1-7): C03B37/027; G01L5/10; G02B6/00
Attorney, Agent or Firm:
Yusuke Sato