1310nm Polarization Insensitive Isolator utilizes Faraday Effect of Magneto optical crystal. It guides optical light in one direction and eliminates back reflection and back scattering in the reverse direction at any polarization sate. It has been widely used in Fiber amplifiers, Fiber lasers, transmitters and other fiber optic communication equipments to suppress back reflection and back scattering.
1310nm Polarization Insensitive Isolator utilizes Faraday Effect of Magneto optical crystal. It guides optical light in one direction and eliminates back reflection and back scattering in the reverse direction at any polarization sate. The unique manufacturing process and optical path epoxy-free design enhance the device's high-power handling capability. The devices are characterized with low insertion loss, high isolation, high return loss, excellent environmental stability and reliability and low cost. It has been widely used in EDFAs, Raman amplifiers, DWDM systems, Fiber lasers, transmitters and other fiber optic communication equipments to suppress back reflection and back scattering.
Parameter
|
Unit
|
Values
|
|||
Stage
|
-
|
Single
|
Dual
|
||
Grade
|
-
|
P
|
A
|
P
|
A
|
Operating Wavelength
|
nm
|
1310
|
|||
Band Width
|
nm
|
±15
|
|||
Typ. Peak Isolation at 23℃
|
dB
|
42
|
40
|
52
|
50
|
Min. Isolation at 23℃
|
dB
|
32
|
30
|
46
|
45
|
Typ. Insertion Loss at 23℃
|
dB
|
0.3
|
0.4
|
0.4
|
0.5
|
Max. Insertion loss at 23℃
|
dB
|
0.5
|
0.7
|
0.6
|
0.8
|
Return Loss (In/Out)
|
dB
|
>60/55
|
>55/50
|
>60/55
|
>55/50
|
PDL
|
dB
|
< 0.05
|
< 0.1
|
< 0.05
|
< 0.1
|
PMD
|
ps
|
0.2(0.05 available upon request)
|
|||
Maximum Power Handling(CW)
|
W
|
0.3, 1, 3, 5, 10
|
|||
Max. Tensile Load
|
N
|
5
|
|||
Fiber Type
|
-
|
SMF-28e fiber, or other
|
|||
Operating Temperature
|
°C
|
-20~+70
|
|||
Storage Temperature
|
°C
|
-40 ~+85
|
|||
Dimensions
|
mm
|
Ф5.5× L35(<10W), 60x12x8(>10W)
|
①
|
②
|
③
|
④
|
⑤
|
⑥
|
⑦
|
⑧
|
Type
|
Wavelength
|
Grade
|
Power Handling
|
Fiber Type
|
Pigtails Diameter
|
Fiber Length
|
Connector
|
IS: Single stage
IU: Dual stage
|
13:1310nm
XX: Others
|
P:P Grade
A: A Grade
|
L:<0.3W
1:1W
3:3W
5:5W
|
S28: SMF-28e
|
25:250μm bare fiber
90:900μm Loose Fiber
XX: Others
|
05:0.5m
10:1.0m
15:1.5m
XX: Others
|
00: None
FP: FC/PC
FA: FC/APC
LA: LC/APC
XX: Others
|
If you need to customize other specifications, please provide detailed description for your requirement.
Function
An optical isolator is a passive magneto-optic device that only allows light to travel in one direction. Isolators are used to protect a source from back reflections or signals that may occur after the isolator. Back reflections can damage a laser source or cause it to mode hop, amplitude modulate, or frequency shift. In high-power applications, back reflections can cause instabilities and power spikes.
An isolator's function is based on the Faraday Effect. In 1842, Michael Faraday discovered that the plane of polarized light rotates while transmitting through glass (or other materials) that is exposed to a magnetic field. The direction of rotation is dependent on the direction of the magnetic field and not on the direction of light propagation; thus, the rotation is non-reciprocal. The amount of rotation β equals V x B x d, where V, B, and d are as defined below.
Figure 1. Schematic diagram of Faraday effect
Faraday Rotation
β = V x B x d