Patent ID: 9429704
Filing Date: 2016-08-30
CPC Classification: G02B

Claim Text:
1. A system for writing a grating onto an optical fiber, the system comprising: a vessel to hold a liquid index-matching material, the liquid index-matching material adhering to the optical fiber, the vessel comprising: an index-modulation mechanism located parallel to the passage, the index-modulation mechanism to create an index modulation within a portion of the optical fiber that is inside of the passage and coated by the liquid index-matching material; a reel-to-reel system operatively coupled to the vessel, the reel-to-reel system to pull the optical fiber through the passage; a replenishment system operatively coupled to the vessel, the replenishment system to replenish the vessel with liquid index-matching material; and an exit cleaning system located at the exit, the exit cleaning system to remove the coated liquid index-matching material from the optical fiber as the optical fiber exits the passage.