633nm 780nm 850nm Special Cut-off Cutoff Wavelength SMF Sm Single-Mode Optical Fibers

• Application: Communication, Sensor, Medicine, Probe, Light Guide
• Type: Single-mode Fiber
• Connection Structure: Customized
• Material Shape: Round Wire
• Allowed Lateral Pressure: >1000(N/100mm)
• Allowed Tensile Strength: 100kpsi or Customize
• Model NO.: SMF
• Core: Single Core
• Certification: RoHS, CE, ISO9001
• Brand: 3V-Tech
• Sheath Material: Customized
• Working Wavelength(Nm): 633/780/850
• Mode Field Diameter(Um): 4.0/4.5/5.0
• Screening Tension(Kpsi): 100 or Customize
• Cladding Diameter(Um): 124.5
• Transport Package: Standard
• Specification: BI15-125-U25
• Trademark: 3V-TECH
• Origin: China
• Production Capacity: 50, 000meter/Month

Product Description

Special Cut-off Wavelength SM Fibers

Our special cutoff wavelength single-mode fiber is a special single-mode fiber product designed and developed for all kinds of special working band optic fiber devices. This series of optic fiber preforms are prepared by in-tube chemical vapor deposition process, which has the advantages of low hydroxyl group, accurate geometric parameters, good optical uniformity, good bending resistance and so on. This series of optic fibers are widely used in special band optic fiber signal transmission, optic fiber sensing devices, optic fiber amplifiers, fiber lasers and so on.

 

2. Fiber Geometry

 

3. Technical parameters

Features	Unit	Product indicator
Product type	/	SC63-125-U25	SC78-125-U25	SC85-125-U25
Optical properties
Working wavelength	nm	633	780	850
Cutoff wavelength	nm	450~600	600~750	680~820
Attenuation	dB/km	≤12.0	≤5.0	≤4.0
Mode field diameter	μm	4.0±0.5	4.5±0.5	5.0±0.5
Geometric properties
Cladding diameter	μm	124.5±1.0	124.5±1.0	124.5±1.0
Core-cladding concentricity	μm	≤0.5	≤0.5	≤0.5
Cladding out-of-roundness	/	≤1.0%	≤1.0%	≤1.0%
Coating diameter	μm	245.0±2.0	245.0±2.0	245.0±2.0
Environmental and mechanical properties
Operating temperature	ºC	-45~+85	-45~+85	-45~+85
Screening tension	kpsi	100	100	100

 

4. Advantages

Low attenuation of optic fiber fusion
Low bending additional attenuation
Excellent geometric uniformity
Excellent mechanical properties

 

5. Application

Special light source device
Fiber laser and fiber amplifier
Optic fiber sensing device
Pump tail fiber

 

6. Customization Information

• The same type of fine diameter optic fiber with cladding diameter of 60 ~ 80μm can be customized

• Optic fiber with special coating material and special outer diameter can be customized

• Optic fiber with special mode field diameter can be customized

• Optic fibers with screening tension of 200kpsi can be customized