Patent EP0893862A2 successfully refreshed from Google Patents.
EP0893862A2
Expired / Lapsed
EP
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Tapered fiber bundles for coupling light into and out of cladding-pumped fiber devices
Assignee: Nokia of America Corp
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Filing: 1998-07-14
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Granted: —
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Expires: 2018-07-14
Abstract
Abstract In accordance with the invention, light is coupled from a plurality of semiconductor emitters to a cladding-pumped fiber via tapered fiber bundles fusion spliced to the cladding-pumped fiber. Individual semiconductor broad stripe emitters can be coupled to individual multimode fibers. The individual fibers can be bundled together in a close-packed formation, heated to melting temperature, drawn into a taper and then fusion spliced to the cladding-pumped fiber. Advantageously, the taper is then overcoated with cladding material such as low index polymer. In addition, a fiber containing a single-mode core can be included in the fiber bundle. This single-mode core can be used to couple light into or out of the single-mode core of the cladding-pumped fiber.
Inventors
- 👤 David John Di Giovanni
- 👤 Andrew John Stentz
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 17:15
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/28; G02B6/2804; G02B6/2856; H; H01; H01S; H01S3/00; H01S3/09; H01S3/091; H01S3/094; H01S3/094003; H01S3/05; H01S3/06; H01S3/063; H01S3/067; H01S3/06708
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
93 words
A cladding pumped optical fiber device comprising: a length of cladding pumped fiber; a plurality of optical sources for optically pumping said cladding
pumped fiber; and a plurality of multimode fibers optically coupling said optical sources to
said cladding pumped fiber, each multimode fiber having a first end coupled to an
optical source and a second end coupled to said cladding pumped fiber, said plurality of
multimode fibers bundled together in a region intermediate the first and second ends
and said bundle tapered to a reduced cross sectional region at the second ends.
Claim 2
Dependent Claim
15 words
The device of claim 1 wherein said cladding pumped fiber includes a
rare-earth doped core.
Claim 3
Dependent Claim
14 words
The device of claim 2 wherein said cladding pumped fiber is an optical
amplifier.
Claim 4
Dependent Claim
14 words
The device of claim 2 wherein said cladding pumped fiber is a fiber
laser.
Claim 5
Dependent Claim
36 words
The device of claim 1 wherein said cladding pumped fiber has a first
cross sectional area and said bundle is tapered to a cross sectional area less than or
equal to said first cross sectional area.
Claim 6
Dependent Claim
19 words
The device of claim 1 wherein said reduced cross sectional region is
fusion spliced to said cladding pumped fiber.
Claim 7
Dependent Claim
15 words
The device of claim 1 wherein said fibers are bundled in a close packed
formation.
Claim 8
Dependent Claim
25 words
The device of claim 1 further comprising a single mode fiber bundled
with said plurality of multimode fibers and coupled to said cladding pumped fiber.
Claim 9
Dependent Claim
46 words
The device of claim 1 wherein said cladding pumped fiber has a pair of
ends, each end of said cladding pumped fiber is coupled to the tapered end of a
respective bundle of fibers, and at least one bundle of fibers includes a single mode
fiber.
Claim 10
Dependent Claim
17 words
The device of claim 1 wherein said rare-earth doped cladding pumped
fiber includes an optical feedback cavity.
Claim 11
Dependent Claim
40 words
A tapered fiber bundle comprising: a length of cladding pumped fiber; a plurality of multimode fibers bundled together, said bundle tapered to
a reduced cross sectional region, and said reduced cross sectional region fusion spliced to said cladding
pumped fiber.
Claim 12
Dependent Claim
16 words
The fiber bundle of claim 11 wherein said cladding pumped fiber
includes a rare-earth doped core.
Claim 13
Dependent Claim
16 words
The fiber bundle of claim 12 wherein said cladding pumped fiber
includes an optical feedback cavity.
Claim 14
Dependent Claim
26 words
The fiber bundle of claim 11 further comprising a single mode fiber bundled
with said plurality of multimode fibers and coupled to said cladding pumped fiber.
References Cited (Backward Citations)
No citation records indexed.
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