Method for making a preform for optical fibers by drawing a moth

Details Method for making a preform for optical fibers by drawing a moth Method for making a preform for optical fibers by drawing a moth

1998-05-12

2000-10-17

Silverman, Stanley S.

Glass manufacturing

Processes of manufacturing fibers, filaments, or preforms

With measuring, controlling, sensing, programming, timing,...

65382, 65385, 65425, 65429, 65433, G01N 2300

Patent

active

061314145

ABSTRACT:
A method for drawing a mother ingot into a preform for optical fibers comprises providing a mother ingot, subjecting the mother ingot to measurement of a distribution of refractive index along radial directions thereof to determine a ratio of a core diameter to a clad diameter, and comparing the thus determined ratio with a predetermined ratio between the core diameter and the ingot diameter which ensures intended optical transmission characteristics, under which if the determined ratio is insufficient for the intended light transmission characteristics, the mother ingot is further processed until the predetermined ratio is substantially attained, and the resultant ingot is drawn to a preform, or if the determined ratio is acceptable on comparison with the predetermined ratio, the mother ingot is finally drawn.

REFERENCES:
patent: 4227806 (1980-10-01), Watkins
patent: 4579571 (1986-04-01), Hicks, Jr.
patent: 4597785 (1986-07-01), Karbassiyoon et al.
patent: 4726677 (1988-02-01), Glantschnig et al.
patent: 4797143 (1989-01-01), Chida et al.
patent: 4934818 (1990-06-01), Glantschnig et al.
patent: 5192350 (1993-03-01), Le Sergent
patent: 5656056 (1997-08-01), Braglia et al
P. Valenta et al.: "Ein optisches Verfahren zur Prufung von Glasfaser-Vorformen", Elektronik, vol. 31, No. 12, Jun. 1982, pp. 93-94, XP002073398, Munchen, DE.

Affiliated with

Also associated with

Rating

Method for making a preform for optical fibers by drawing a moth does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for making a preform for optical fibers by drawing a moth, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making a preform for optical fibers by drawing a moth will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-457843