Title:
光媒体内に屈折率パターンを記録するための方法及び装置
Document Type and Number:
Japanese Patent JP3935941
Kind Code:
B2
Abstract:
A device for recording a refractive index pattern in a photosensitive optical fiber includes a rotary disc formed with a phase mask in a circular pattern, which is rotated by an axis. The phase mask is illuminated with laser light in a region so that a moving interference pattern is formed. The optical fiber is moved along a path in synchronism with the moving interference pattern so that the pattern becomes recorded in the fiber. The pattern can be formed continuously over long fiber lengths, e.g., of the order of one meter.
Inventors:
Cashap, raman
Application Number:
JP52578797A
Publication Date:
June 27, 2007
Filing Date:
January 16, 1997
Export Citation:
Assignee:
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY
International Classes:
G02B6/02; G02B5/18; G02B6/10
Domestic Patent References:
| JP7281016A | ||||
| JP3112124A |
Attorney, Agent or Firm:
Takehiko Suzue
Sadao Muramatsu
Ryo Hashimoto
Toshio Shirane
Sadao Muramatsu
Ryo Hashimoto
Toshio Shirane