LOW LOSS OPTICAL FIBER AND MANUFACTURING METHOD THEREOF

• Main Authors: PECKHAM DAVID, LINGLE ROBERT JR, GIBSON LANCE
• Format: Patent
• Language: English
• Published: 18.01.2007
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

PROBLEM TO BE SOLVED: To provide an optical fiber manufacturing method for manufacturing a low loss optical fiber inexpensively. SOLUTION: This invention discloses the optical fiber manufacturing method comprising: a step for preparing an optical fiber preform; a step for heating up to temperature which softens the preform; and a step for drawing the optical fiber from the preform, and the preform includes at least: an inside core area of which delta is larger than 0.001; an outside core area of which delta is between -0.001 and 0.005; and a first clad area of which delta is smaller than -0.001, and further, the inside core area and the outside core area are formed using the VAD method or the OVD method. COPYRIGHT: (C)2007,JPO&INPIT