Bow-tie Polarization-maintaining Fiber
1. Introduction
Bow-tie polarization-maintaining fiber manufactured by YOEC is mainly used in the field of fiber optic gyroscope & current transformer, with the excellent temperature stability & birefringence performance.
YOEC adopts MCVD process to produce bow-tie polarization-maintaining fibers, which optimizes the structure of fiber core & stress zone, improves the fiber symmetry & consistency, and makes better polarization performance & temperature stability.
2. Fiber Geometry
3. Technical parameters
Characteristics |
Unit |
Specifications |
||||
Product Type |
|
BT13-80-U13 |
BT13-80-U16 |
BT15-80-U13 |
BT15-80-U16 |
|
|
Optical Properties |
|||||
operating wavelength |
nm |
1310 |
1310 |
1550 |
1550 |
|
cutoff wavelength |
nm |
1100 ~ 1290 |
1100~ 1290 |
1290 ~ 1520 |
1290 ~ 1520 |
|
mode field diameter |
µm |
6.0 ± 1.0 |
6.0 ± 1.0 |
6.5 ± 1.0 |
6.5 ± 1.0 |
|
attenuation |
dB/km |
≤ 1.0 |
≤ 1.0 |
≤ 1.0 |
≤ 1.0 |
|
beat length |
mm |
≤ 2.5 |
≤ 2.5 |
≤ 3.0 |
≤ 3.0 |
|
typical crosstalk |
dB/km |
≤ -25 |
≤ -25 |
≤ -25 |
≤ -25 |
|
|
Geometrical Properties |
|||||
cladding diameter |
µm |
80.0 ± 1.0 |
80.0 ± 1.0 |
80.0 ± 1.0 |
80.0 ± 1.0 |
|
coating type |
/ |
double-layer UV curable acrylic resin |
||||
coating diameter |
µm |
135.0 ± 2.0 |
168.0 ± 3.0 |
135.0 ± 2.0 |
168.0 ± 3.0 |
|
cladding non-circularity |
% |
≤ 2.0 |
≤ 2.0 |
≤ 2.0 |
≤ 2.0 |
|
core/cladding concentricity |
µm |
≤ 1.0 |
≤ 1.0 |
≤ 1.0 |
≤ 1.0 |
|
|
Environmental & Mechanical Properties |
|||||
Operating temperature |
ºC |
-45 ~ +85 |
-45 ~ +85 |
-45 ~ +85 |
-45 ~ +85 |
|
proof tension |
kpsi |
100 |
100 |
100 |
100 |
4. Advantages
● The relative small area of the stress zone
● High birefringence coefficient
● High stability & reliability
● Temperature insensitive
5. Application
● Fiber optic gyroscope
● Fiber current transformer
6. Customization Information
● Polarization-maintaining fibers with other specification or other type can be customized according to the customer requirement.
http://www.yoecgroup.com/