Bare Fiber Reel OTDR Testing Fiber Spool Lab Grade Dead Zone Eliminator
Bare fiber reel is lab‑grade bare‑fiber test‑spool for OTDR calibration and R&D work. Low‑macro‑bending single‑mode bare‑fiber, available up to 75km long reference‑fiber, supports custom fiber‑coloring for laboratory identification. Not suitable for rough outdoor field dragging.
Laboratories, third‑party‑testing institutions and R&D departments require high‑quality known reference‑fiber for OTDR instrument calibration, component‑testing and experimental validation. Ordinary jacketed field‑oriented launch cable cannot meet long‑distance benchmark‑testing and special‑color‑identification lab‑needs.
BFR Bare‑Fiber‑Reel provides professional bare‑fiber test‑spool solution. Adopt G.652D or G.657A low‑macro‑bending single‑mode bare‑fiber (250μm coated / 125μm bare), delivering stable full‑wavelength optical‑behavior. It works as reference launch‑fiber to shift OTDR dead‑zone onto spool‑fiber, realizing precise measurement of connector insertion‑loss and reflectance. It can also serve as far‑end receive‑reference for lab‑complete‑link simulation test.
Available standard length: 2km and 25km for long‑distance calibration. Unique custom‑fiber‑coloring service helps lab‑engineers quickly distinguish different reference‑fiber samples. Light‑weight ABS plastic spool ensures stable fiber winding without kinking damage; optional plastic dust‑cover protects bare‑fiber when stored.
⚠️ Important note: This is bare‑fiber without heavy‑duty outer protective jacket. It is designed for laboratory / indoor controlled environment. NOT fit for rough dragging, trampling or harsh outdoor construction‑site deployment.
Suitable for OTDR calibration, technician lab‑training, optical‑component test, production‑line quality‑verification and fiber‑network‑simulation experiment.
Need compact coiled‑ring field‑use launch‑cable? View FR Fiber‑Ring. For IP67 waterproof rugged box‑style launch‑cable with YOFC fiber variant, check LFC‑A launch‑cable box. For IP67 waterproof rugged box‑style with Corning fiber, see LFC‑B launch‑cable box.
Key Features
Lab‑grade bare‑fiber spool for OTDR dead‑zone elimination, instrument calibration and R&D experiments
Note: Recommendation:2km for common lab‑testing; 25km for long‑distance OTDR instrument calibration.
Every unit undergoes insertion‑loss & return‑loss testing before shipment. Custom‑fiber‑coloring, custom‑length and private‑label available.
This bare‑fiber reel is for controlled lab‑indoor‑use, NOT for rough‑field dragging.
Technical Specifications
Optical Specifications
Parameter
Value
Bare‑Fiber Type
Single‑mode G.652.D / G.657.A1
Standard Length
2km / 25km
Attenuation @1310nm
0.33~0.35 dB/km
Attenuation @1490nm
0.21~0.24 dB/km
Attenuation @1550nm
0.19~0.20 dB/km
Attenuation @1625nm
0.21~0.23 dB/km
Min Macrobending Radius
30mm(G.652D); 15mm(G.657A1)
Bare‑Fiber Dimension
125μm bare / 250μm coated
Connector
SC / FC / LC UPC / APC; mixed‑connector custom
Mechanical & Environmental
Parameter
Value
Spool Material
Light‑weight ABS plastic
Optional Accessory
Plastic dust‑cover
Weight
~0.2kg (2km); ~1.2kg (25km)
Operating Temperature
‑20°C ~ +70°C
Storage Temperature
‑40°C ~ +85°C
Standard Package
Inside: to use protective film to fix the bare fiber
Outside: to use plastic hard case to protect the whole bare fiber
Package: to use the dedicated cardboard box for export shipment
FAQ
Q1: What is difference between FR Fiber‑Ring, LFC‑A, LFC‑B and BFR bare‑fiber reel? A: FR Fiber‑Ring is compact coiled‑ring launch/receive cable; flexible or armored choice, fits OTDR bag for general field jobs. LFC‑A / LFC‑B are IP67 waterproof hard box‑type launch cable for harsh outdoor environment. LFC‑A uses default YOFC fiber; LFC‑B uses default Corning fiber. BFR is bare‑fiber reel without protective outer‑jacket, for laboratory calibration / R&D indoor‑use only, NOT for rough‑field dragging.
Q2: Can I deploy BFR bare‑fiber‑reel to outdoor construction‑site? A: NOT RECOMMENDED. BFR uses bare‑fiber without tough outer protective jacket. Bare‑fiber is very easy to get damaged by dragging, treading or bending stress. It is designed for controlled laboratory indoor‑environment only. Select FR / LFC‑A / LFC‑B for field‑site work.
Q3: What scenario choose 2km vs 25km BFR bare‑fiber‑reel? A: Select 2km for regular laboratory‑test, component‑evaluation and training; select 25km for long‑distance OTDR instrument‑calibration benchmark‑reference.
Q4: What is custom‑bare‑fiber‑coloring function used for? A: Different‑colored bare‑fibers help lab‑engineers quickly identify multiple reference‑fiber samples without extra‑labeling, convenient for multi‑group comparison‑experiment.
Q5: Custom‑connector and OEM private‑label is supported? A: Yes, mixed‑connector‑combinations, custom‑fiber‑coloring, custom‑length and OEM private‑label‑service can be provided.
