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Large Diameter Fiber (LDF) fusion splicers, such as the Shinho S-37 and FITEL S185LDF, are specialized tools designed to splice optical fibers with cladding diameters ranging from 80µm to over 1000µm (1mm+). These machines are crucial for high-power fiber lasers, medical devices, and specialty fiber components requiring robust, low-loss connections.
Key Large Diameter Fusion Splicers & Capacities
- 3SAE LDS 2.5 / PentaPod: Covers 125µm to 2.5mm, suitable for extreme diameter fiber splicing and tapering.
- Shinho S-37 / S-37 Plus: Specialized for 125µm to 680µm, often used in laser source repair.
- FITEL S185LDF / S185PMLDF: Designed for 80µm to 500µm, optimized for fiber laser industry applications.
- Shinho S-27 LDF: Supports 125µm up to 400µm-600µm cladding.
- Fujikura 100 Series: The Fujikura 100M/P series supports 600µm up to 1200µm for specialized applications.
Key Features of Large Diameter Splicers
- High-Power Handling: Designed to manage high-power density without damaging the fiber cladding or creating high-loss, according to Shinho Optics Limited.
- Precision Alignment: Utilize specialized imaging systems (like Endview and Profile observation) to align fibers with large cores.
- Advanced Arc Calibration: Features like automated arc calibration (found on the S400 LDF) ensure high-quality, repeatable splices, as shown on SeikoFire.com.
- Wide Cladding Support: Optimized to handle cladding diameters significantly larger than standard 125µm telecom fiber.
For smaller LDF needs (125-400um), units like the ST-27LDF-400 are available from vendors like Fiber Mart.
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Web results
Fiber Optic Splicing
Fiber Optic Center
https://focenter.com › Products
Fiber Optic Center
https://focenter.com › Products
The FITEL S185HS / S185PM High-end Fusion Splicers are designed for high strength fusion splicing of... Part: SPL-06-0200. Add to Quote.Read more
Large Diameter Splicing System (LDS 2.5)
3SAE Technologies Inc.
https://3sae.com › Glass Processing
3SAE Technologies Inc.
https://3sae.com › Glass Processing
The Large Diameter Splicer (LDS 2.5) is an optical glass processing system designed for splicing, tapering, manufacturing of combiners, mode field adaptors, ...Read more
S37 - Large Diameter Fiber Fusion Splicer 125~600um
Shinho America
https://shinhoamerica.com › product › 400um-ldf-large...
Shinho America
https://shinhoamerica.com › product › 400um-ldf-large...
SHINHO S37 is the latest model we developed, it could splice fiber cladding diameter from 125 to 500μm with low splice loss. We equipped the machine with 3 ...Read more
ST-27 LDF Fiber Fusion Splicer for Large Diameter ...
Fiber-Mart.com
https://www.fiber-mart.com › ... › Fusion Splicer
Fiber-Mart.com
https://www.fiber-mart.com › ... › Fusion Splicer
Applicable to cladding diameter 125~400μm fibers. Accurate alignment, world standard fusion loss. 14s splicing time, 24s heating time for 40/60mm tube.Read more
$14,850.00In stockFree delivery60-day returns
Discussions and forums
Large core fusion splicers
Reddit ·
r/FiberOptics
· 8 comments
· 9 months ago
Large core fusion splicers
Reddit ·
r/FiberOptics
· 8 comments
· 9 months ago
Can common fusion splices be tuned to splice larger diameter fibers?
Reddit ·
r/FiberOptics
· 6 comments
· 6 years ago
Can common fusion splices be tuned to splice larger diameter fibers?
Reddit ·
r/FiberOptics
· 6 comments
· 6 years ago
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Videos
Web results
S-37 Large Core Fiber Fusion Splicer
HJ Optronics, Inc.
https://hjoptronicsinc.com › Collections › Fiber Tool
HJ Optronics, Inc.
https://hjoptronicsinc.com › Collections › Fiber Tool
S-39 large-diameter fiber fusion splicers are specialized devices designed to splice optical fibers with larger cladding diameters, typically ranging from ...
Application of large diameter fiber fusion splicer in laser ...
Shinho Optics Limited
https://www.xhfiber.com › application-of-large-diameter...
Shinho Optics Limited
https://www.xhfiber.com › application-of-large-diameter...
Apr 17, 2025 — The large diameter fiber fusion splicer effectively solves the multimode fiber fusion problem in the maintenance of laser core components through technological ...Read more
LDF Specialty Large Diameter Fibe Fusion Splicer S400
SeikoFire Technology
https://www.seikofire.com › Fusion Splicer
SeikoFire Technology
https://www.seikofire.com › Fusion Splicer
LDF Specialty Large Diameter Fibe Fusion Splicer S400. It suitable for splice fiber cladding diameter from 125μm~400μm with low splice loss.Read more
T-LFS4100 - Vytran Filament Fusion Splicer for Standard, ...
Fosco Connect
https://www.fiberoptics4sale.com › products › t-lfs4100-...
Fosco Connect
https://www.fiberoptics4sale.com › products › t-lfs4100-...
T-LFS4100 - Vytran Filament Fusion Splicer for Standard, Large-Diameter, and Specialty Fiber. Part No.: T-LFS4100. $ 60,250.00.Read more
$60,250.00$6.50 delivery30-day returns
Large-Diameter Fiber Stripper Thermal Stripper | Product
古河電気工業株式会社
https://www.furukawaelectric.com › splicer › thermal_st...
古河電気工業株式会社
https://www.furukawaelectric.com › splicer › thermal_st...
Features · Can remove the jacket from single-core fibers with a clad diameter of 80 to 1,000 μm · Hot stripper that heats and softens fiber cores · Adjustable ...Read more
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