Fiber cladding light stripper
View Patent ↗A high power cladding light stripper and high power laser systems using the same are described. A cladding light stripper includes a housing, a section of fiber disposed in relation to the housing wherein a portion of the section of fiber has an exposed cladding region, a plurality of glue regions sequentially arranged adjacent to each other along the section of fiber and covering the exposed cladding region, and wherein at least one glue region between a first glue region and a last glue region of the plurality of glue regions has a refractive index higher or lower than both an adjacent previous glue region and an adjacent subsequent glue region.
1. A cladding light stripper, comprising:
a housing;
a section of fiber disposed in relation to said housing, wherein a portion of said section of fiber has an exposed cladding region; and
a plurality of glue regions sequentially arranged adjacent to each other along said section of fiber and covering said exposed cladding region;
wherein at least one glue region between a first glue region and a last glue region of said plurality of glue regions has a refractive index either higher or lower than both an adjacent previous glue region and an adjacent subsequent glue region.
2. The cladding light stripper of claim 1 , wherein said first glue region surrounds both said exposed cladding region and a coated region of said section of fiber.
3. The cladding light stripper of claim 1 , wherein said first glue region of said plurality of glue regions has a first refractive index larger than said exposed cladding region, a second glue region of said plurality of glue regions has a second refractive index larger than said first refractive index, and a third glue region of said plurality of glue regions has a third refractive index smaller than said second refractive index.
4. The cladding light stripper of claim 1 , wherein said last glue region of said plurality of glue regions has a refractive index larger than each previous glue region.
5. The cladding light stripper of claim 1 , wherein a first set of said plurality of glue regions has an alternating low index and high index profile.
6. The cladding light stripper of claim 5 , wherein said glue regions with a low index have lengths that are approximately equal, and said glue regions with a high index have lengths that gradually increase.
7. The cladding light stripper of claim 6 , wherein said alternating low index and high index profile includes five low index glue regions and four high index glue regions.
8. The cladding light stripper of claim 6 , wherein said alternating low index and high index profile includes five high index glue regions and four low index glue regions.
9. The cladding light stripper of claim 6 , wherein said alternating low index and high index profile includes four low index glue regions and three high index glue regions.
10. The cladding light stripper of claim 6 , wherein said alternating low index and high index profile includes six low index glue regions and five high index glue regions.
11. The cladding light stripper of claim 7 , wherein said plurality of glue regions includes a tenth region having an index higher than indexes of each previous glue region.