Bare Optical Fibers

Bare optical fibers used for connecting a light source to another device/equipment. It features a fiber optic core and cladding only. Learn More

Product	Numerical Aperture	Cladding Diameter	Key Features	Availability	Price (USD)	Add to Cart
Double-Clad Fiber	0.12 (Core) 0.2 (Inner Cladding)	105 μm (±5 μm, 1st) 125 μm (±1 μm, 2nd)	Double-Clad	In stock	$ 21.26 / m	Quantity in m
Product Code Numerical Aperture 0.12 (Core) 0.2 (Inner Cladding) Cladding Diameter 105 μm (±5 μm, 1st) 125 μm (±1 μm, 2nd) Key Features Double-Clad Wavelength Range 1250 - 1600 nm (SM Operation) 400 - 2200 nm (MM Operation) Cladding Material Glass (1st Cladding) Core Diameter 9 μm Coating Diameter 245 μm (±15 μm) Coating Material Acrylate Mode Field Diameter 9.8 - 11.2 μm (at 1.55 μm) Cut-Off Wavelength < 1250 nm Cladding Refractive Index 1.44344 (655 nm, 2nd Cladding) 1.45713 (655 nm, 1st Cladding) Core Absorption < 0.5 dB/km (1550 nm) Core Refractive Index 1.46208 (655 nm) Short Term Bend Radius > 12 mm Long Term Bend Radius > 25 mm Supplier Location New Jersey, USA See product details More from Thorlabs
Ho-Doped Double-Clad Fiber	0.08 0.45 (2nd)	125 μm 180 μm (2nd)	Low Phonon Energy	In stock	Add to cart to request quote
Product Code Numerical Aperture 0.08 0.45 (2nd) Cladding Diameter 125 μm 180 μm (2nd) Key Features Low Phonon Energy Wavelength Range 545 - 550 nm Cladding Material Zirconium Fluoride Glass Core Diameter 7.5 μm Applications Visible Laser Generation Cut-Off Wavelength 780 nm Core Material Zirconium Fluoride Glass Dopant Concentration 5000 ppm (Dopant 1) Supplier Location France See product details More from Le Verre Fluoré
Pr-Doped Double-Clad Fiber	0.08 0.45 (2nd)	115 x 125 μm 180 μm (2nd)	Low Phonon Energy	In stock	Add to cart to request quote
Product Code Numerical Aperture 0.08 0.45 (2nd) Cladding Diameter 115 x 125 μm 180 μm (2nd) Key Features Low Phonon Energy Wavelength Range 491 nm, 521 nm, 635 nm Cladding Material Zirconium Fluoride Glass Core Diameter 7.5 μm Applications Visible Laser Generation Cut-Off Wavelength 780 nm Core Material Zirconium Fluoride Glass Dopant Concentration 8000 ppm (Dopant 1) Supplier Location France See product details More from Le Verre Fluoré
Yb-Doped Double-Clad Fiber	> 0.48 (Cladding)	125 μm (±1 μm)	Double-Clad, Large Mode ...	In stock	$ 61.20 / m	Quantity in m
Product Code Numerical Aperture > 0.48 (Cladding) Cladding Diameter 125 μm (±1 μm) Key Features Double-Clad Large Mode Area Polarization Maintaining Wavelength Range 1000 - 1100 nm Cladding Material Silica Coating Diameter 245 μm (±1 μm, Second Cladding) Applications Fiber Lasers Coating Material Low-Index Acrylate Mode Field Diameter 15 μm (±1 μm) Core Concentricity < 1 μm Birefringence ≥ 8 × 10^-5 Cladding Geometry Round, Panda Supplier Location New Jersey, USA See product details More from Thorlabs
Yb-Doped Double-Clad Fiber	0.12 (Core)	125 μm (±1 μm)	Double-Clad, Large Mode ...	In stock	$ 107.49 / m	Quantity in m
Product Code Numerical Aperture 0.12 (Core) Cladding Diameter 125 μm (±1 μm) Key Features Double-Clad Large Mode Area Polarization Maintaining Single Mode Wavelength Range 1000 - 1100 nm Cladding Material Silica Coating Diameter 245 μm (±15 μm, Second Cladding) Applications Fiber Lasers Coating Material Low-Index Acrylate Cladding Absorption 2400 dB/km (976 nm, Peak) 550 dB/km (±100 dB/km, 920 nm) Fiber Loss/Attenuation 550 dB/km (±100 dB/km, 920 nm) Mode Field Diameter 7 μm (±500 nm) Core Concentricity < 1 μm Birefringence ≥ 2 × 10^-4 Cladding Geometry Round, PANDA Supplier Location New Jersey, USA See product details More from Thorlabs
Tm/Nd-Doped Double-Clad Fiber	0.07 0.15 (2nd)	12 μm (1st) 125 μm (2nd)	Low Phonon Energy	In stock	Add to cart to request quote
Product Code Numerical Aperture 0.07 0.15 (2nd) Cladding Diameter 12 μm (1st) 125 μm (2nd) Key Features Low Phonon Energy Wavelength Range 480 nm Cladding Material Zirconium Fluoride Glass Core Diameter 4 μm Applications Visible Laser Generation Cut-Off Wavelength 366 nm Core Material Zirconium Fluoride Glass Dopant Concentration 1000 ppm (Dopant 1) 100 ppm (Dopant 2) Supplier Location France See product details More from Le Verre Fluoré
Yb-Doped Double-Clad Fiber	0.12 (Core) > 0.48 (Cladding)	125 μm (±1 μm)	Double-Clad, Large Mode ...	In stock	$ 27.84 / m	Quantity in m
Product Code Numerical Aperture 0.12 (Core) > 0.48 (Cladding) Cladding Diameter 125 μm (±1 μm) Key Features Double-Clad Large Mode Area Polarization Maintaining Wavelength Range 1000 - 1100 nm Cladding Material Silica Coating Diameter 245 μm (±15 μm, Second Cladding) Applications Fiber Lasers Coating Material Low-Index Acrylate Mode Field Diameter 7 μm (±500 nm) Birefringence ≥ 2 × 10^-4 Cladding Geometry Round Supplier Location New Jersey, USA See product details More from Thorlabs
Yb-Doped Double-Clad Fiber	0.065 (±0.003, Core)	400 μm (±5 μm)	Double-Clad, Large Mode Area	In stock	$ 53.68 / m	Quantity in m
Product Code Numerical Aperture 0.065 (±0.003, Core) Cladding Diameter 400 μm (±5 μm) Key Features Double-Clad Large Mode Area Wavelength Range 1000 - 1100 nm Cladding Material Silica Core Diameter 20 μm (±1.5 μm) Coating Diameter 520 μm (±15 μm, Second Cladding) Applications Fiber Lasers Coating Material Low-Index Acrylate Cladding Geometry Round Supplier Location New Jersey, USA See product details More from Thorlabs
Yb-Doped Double-Clad Fiber	0.07 (±0.005, Core) > 0.48 (Cladding)	250 μm (±5 μm)	Double-Clad, Large Mode Area	In stock	$ 34.35
Product Code Numerical Aperture 0.07 (±0.005, Core) > 0.48 (Cladding) Cladding Diameter 250 μm (±5 μm) Key Features Double-Clad Large Mode Area Wavelength Range 1000 - 1100 nm Cladding Material Silica Core Diameter 25 μm (±1.5 μm) Coating Diameter 350 μm (±15 μm, Second Cladding) Applications Fiber Lasers Coating Material Low-Index Acrylate Cladding Geometry Round Supplier Location New Jersey, USA See product details More from Thorlabs
Yb-Doped Double-Clad Fiber	0.062 (±0.005, Core) > 0.48 (Cladding)	250 μm (±6 μm)	Double-Clad, Large Mode ...	In stock	$ 401.89 / m	Quantity in m
Product Code Numerical Aperture 0.062 (±0.005, Core) > 0.48 (Cladding) Cladding Diameter 250 μm (±6 μm) Key Features Double-Clad Large Mode Area Polarization Maintaining Wavelength Range 1000 - 1100 nm Cladding Material Silica Core Diameter 25 μm (±1.5 μm) Coating Diameter 350 μm (±15 μm, Second Cladding) Applications Fiber Lasers Coating Material Low-Index Acrylate Cladding Absorption 9900 dB/km (976 nm, Peak) 2300 dB/km (±300 dB/km, 920 nm) Fiber Loss/Attenuation 2300 dB/km (±300 dB/km, 920 nm) Core Concentricity < 1 μm Birefringence ≥ 1.6 × 10^-4 Cladding Geometry Round, PANDA Supplier Location New Jersey, USA See product details More from Thorlabs
Yb-Doped Double-Clad Fiber	0.08 (±0.005, Core) > 0.48 (Cladding)	125 μm (±1 μm)	Double-Clad, Large Mode ...	In stock	$ 30.40 / m	Quantity in m
Product Code Numerical Aperture 0.08 (±0.005, Core) > 0.48 (Cladding) Cladding Diameter 125 μm (±1 μm) Key Features Double-Clad Large Mode Area Polarization Maintaining Wavelength Range 1000 - 1100 nm Cladding Material Silica Core Diameter 10 μm (±1 μm) Coating Diameter 245 μm (±15 μm, Second Cladding) Applications Fiber Lasers Coating Material Low-Index Acrylate Birefringence ≥ 1.4 × 10^-4 Cladding Geometry Round Supplier Location New Jersey, USA See product details More from Thorlabs
Yb-Doped Double-Clad Fiber	0.08 (±0.005, Core) > 0.48 (Cladding)	125 μm (±2 μm)	Double-Clad, High Claddi...	In stock	$ 149.90 / m	Quantity in m
Product Code Numerical Aperture 0.08 (±0.005, Core) > 0.48 (Cladding) Cladding Diameter 125 μm (±2 μm) Key Features Double-Clad High Cladding Absorption Large Mode Area Single Mode Core Wavelength Range 1000 - 1100 nm Cladding Material Silica Core Diameter 10 μm (±1 μm) Coating Diameter 245 μm (±15 μm, Second Cladding) Applications Fiber Lasers Coating Material Low-Index Acrylate Cladding Absorption 7400 dB/km (976 nm, Peak) 1700 dB/km (±300 dB/km, 920 nm) Fiber Loss/Attenuation 1700 dB/km (±300 dB/km, 920 nm) Core Concentricity < 1 μm Cladding Geometry Octagonal Supplier Location New Jersey, USA See product details More from Thorlabs
Yb-Doped Double-Clad Fiber	0.065 (±0.003, Core) > 0.48 (Cladding)	400 μm (±10 μm)	Double-Clad, Large Mode ...	In stock	$ 179.09 / m	Quantity in m
Product Code Numerical Aperture 0.065 (±0.003, Core) > 0.48 (Cladding) Cladding Diameter 400 μm (±10 μm) Key Features Double-Clad Large Mode Area Ø400 µm Cladding for Compatibility With Industry-standard High-power Pump Lasers and Delivery Fibers Ø400 μm Cladding for Compatibility With Industry-standard High-power Pump Lasers and Delivery Fibers Wavelength Range 1000 - 1100 nm Cladding Material Silica Core Diameter 20 μm (±1.5 μm) Coating Diameter 520 μm (±15 μm, Second Cladding) Applications Fiber Lasers Coating Material Low-Index Acrylate Cladding Absorption 2400 dB/km (976 nm, Peak) 550 dB/km (±50 dB/km, 920 nm) Fiber Loss/Attenuation 550 dB/km (±50 dB/km, 920 nm) Core Concentricity < 1.2 μm Cladding Geometry Octagonal Supplier Location New Jersey, USA See product details More from Thorlabs
Yb-Doped Double-Clad Fiber	0.12 (Core)	125 μm (±2 μm)	Compatibility With Stand...	In stock	$ 78.39 / m	Quantity in m
Product Code Numerical Aperture 0.12 (Core) Cladding Diameter 125 μm (±2 μm) Key Features Compatibility With Standard Components Such as Gratings and Combiners Double-Clad Large Mode Area Single Mode Telecom-like Geometry Wavelength Range 1000 - 1100 nm Cladding Material Silica Coating Diameter 245 μm (±15 μm, Second Cladding) Applications Fiber Lasers Coating Material Low-Index Acrylate Cladding Absorption 2400 dB/km (976 nm, Peak) 550 dB/km (±100 dB/km, 920 nm) Fiber Loss/Attenuation 550 dB/km (±100 dB/km, 920 nm) Mode Field Diameter 7 μm (±500 nm) Core Concentricity < 1 μm Cladding Geometry Octagonal Supplier Location New Jersey, USA See product details More from Thorlabs
Yb-Doped Double-Clad Fiber	0.07 (±0.005, Core) > 0.48 (Cladding)	250 μm (±5 μm)	Double-Clad, High Claddi...	In stock	$ 270.41 / m	Quantity in m
Product Code Numerical Aperture 0.07 (±0.005, Core) > 0.48 (Cladding) Cladding Diameter 250 μm (±5 μm) Key Features Double-Clad High Cladding Absorption High Efficiency Large Mode Area Wavelength Range 1000 - 1100 nm Cladding Material Silica Core Diameter 25 μm (±1.5 μm) Coating Diameter 350 μm (±15 μm, Second Cladding) Applications Fiber Lasers Coating Material Low-Index Acrylate Cladding Absorption 9900 dB/km (976 nm, Peak) 2300 dB/km (±300 dB/km, 920 nm) Fiber Loss/Attenuation 2300 dB/km (±300 dB/km, 920 nm) Core Concentricity < 1 μm Cladding Geometry Octagonal Supplier Location New Jersey, USA See product details More from Thorlabs
Yb-Doped Double-Clad Fiber	0.065 (±0.004, Core) > 0.48 (Cladding)	125 μm (±1 μm)	Double-Clad, Large Mode ...	In stock	$ 308.89 / m	Quantity in m
Product Code Numerical Aperture 0.065 (±0.004, Core) > 0.48 (Cladding) Cladding Diameter 125 μm (±1 μm) Key Features Double-Clad Large Mode Area Polarization Maintaining Wavelength Range 1000 - 1100 nm Cladding Material Silica Core Diameter 20 μm (±1.5 μm) Coating Diameter 245 μm (±15 μm, Second Cladding) Applications Fiber Lasers Coating Material Low-Index Acrylate Cladding Absorption 5100 dB/km (±750 dB/km, 920 nm) 21900 dB/km (976 nm, Peak) Fiber Loss/Attenuation 5100 dB/km (±750 dB/km, 920 nm) Mode Field Diameter 15 μm (±1 μm) Core Concentricity < 1 μm Birefringence ≥ 8 × 10^-5 Cladding Geometry Round, PANDA Supplier Location New Jersey, USA See product details More from Thorlabs
Yb-Doped Double-Clad Fiber	0.08 (±0.005, Core) > 0.48 (Cladding)	125 μm (±2 μm)	Double-Clad, Large Mode Area	In stock	$ 13.08 / m	Quantity in m
Product Code Numerical Aperture 0.08 (±0.005, Core) > 0.48 (Cladding) Cladding Diameter 125 μm (±2 μm) Key Features Double-Clad Large Mode Area Wavelength Range 1000 - 1100 nm Cladding Material Silica Core Diameter 10 μm (±1 μm) Coating Diameter 245 μm (±15 μm, Second Cladding) Applications Fiber Lasers Coating Material Low-Index Acrylate Cladding Geometry Round Supplier Location New Jersey, USA See product details More from Thorlabs
Yb-Doped Double-Clad Fiber	0.07 (±0.005, Core) > 0.48 (Cladding)	250 μm (±3 μm)	Double-Clad, Large Mode ...	In stock	$ 108.65 / m	Quantity in m
Product Code Numerical Aperture 0.07 (±0.005, Core) > 0.48 (Cladding) Cladding Diameter 250 μm (±3 μm) Key Features Double-Clad Large Mode Area Polarization Maintaining Wavelength Range 1000 - 1100 nm Cladding Material Silica Core Diameter 25 μm (±1.5 μm) Coating Diameter 350 μm (±15 μm, Second Cladding) Applications Fiber Lasers Coating Material Low-Index Acrylate Birefringence ≥ 1.6 × 10^-4 Cladding Geometry Round Supplier Location New Jersey, USA See product details More from Thorlabs
Yb-Doped Double-Clad Fiber	0.08 (±0.005, Core) > 0.48 (Cladding)	125 μm (±1 μm)	Double-Clad, Large Mode ...	In stock	$ 225.93 / m	Quantity in m
Product Code Numerical Aperture 0.08 (±0.005, Core) > 0.48 (Cladding) Cladding Diameter 125 μm (±1 μm) Key Features Double-Clad Large Mode Area Polarization Maintaining Wavelength Range 1000 - 1100 nm Cladding Material Silica Core Diameter 10 μm (±1 μm) Coating Diameter 245 μm (±15 μm, Second Cladding) Applications Fiber Lasers Coating Material Low-Index Acrylate Cladding Absorption 7400 dB/km (976 nm, Peak) 1700 dB/km (±300 dB/km, 920 nm) Fiber Loss/Attenuation 1700 dB/km (±300 dB/km, 920 nm) Core Concentricity < 1 μm Birefringence ≥ 1.4 × 10^-4 Cladding Geometry Round, PANDA Supplier Location New Jersey, USA See product details More from Thorlabs
Yb-Doped Double-Clad Fiber	0.12 (Core) > 0.48 (Cladding)	125 μm (±2 μm)	Double-Clad, Large Mode Area	In stock	$ 15.73
Product Code Numerical Aperture 0.12 (Core) > 0.48 (Cladding) Cladding Diameter 125 μm (±2 μm) Key Features Double-Clad Large Mode Area Wavelength Range 1000 - 1100 nm Cladding Material Silica Core Diameter 7 μm (±500 nm) Coating Diameter 245 μm (±15 μm, Second Cladding) Applications Fiber Lasers Coating Material Low-Index Acrylate Cladding Geometry Round Supplier Location New Jersey, USA See product details More from Thorlabs