光隔離器

 

Optical isolator is a combination of a polarization Beamsplitter cube (PBS) and a quarter waveplate made of crystal quartz. Incident light is linearly polarized by PBS and converted to circular polarization by the quarter waveplate. If any portion of the emerging beam is reflected back into the isolator, the quarter waveplate will convert the reflected beam into a linearly polarized beam which is perpendicular to the input beam. This beam is then blocked by PBS and it will not return to the input side of the system.

Feature:
Block optical feedback
Passive isolation of linearly polarized light
High isolation
RoHS Compliant

Specifications:
Material: -------------------------------------------------------------------------BK7&Crystal Quartz
Dimension tolerance:---------------------------------------------------------+/-0.2mm
Surface quality:------------------------------------------------------------------60/40
Beam Deviation:-----------------------------------------------------------------<3 arc minutes
Transmitted Wavefront Distortion:--------------------------------------------λ/[email protected]
Isolation:----------------------------------------------------------------------------->20dB
Transmission:------------------------------------------------------------------------Tp>95%, Ts<1%
Reflection:-----------------------------------------------------------------------------Rs>99%, Rp<5%
AR coating:---------------------------------------------------------------------------R<0.25%@ central wavelength on all entrances
Damage Threshold:-------------------------------------------------------------->500mJ/cm2, 20ns, 20Hz, @1064nm
 

Standard Product

Part No.
Dimension(mm)
 Isolation(dB)
 Wavelength(mm)
OI8005-532
5x5x5
>20
532
OI8010-532
10x10x10
>20
532
OI8012-532
12.7x12.7x12.7
>20
532
OI8005-633
5x5x5
>20
633
OI8010-633
10x10x10
>20
633
OI8012-633
12.7x12.7x12.7
>20
633
OI8005-780
5x5x5
>20
780
OI8010-780
10x10x10
>20
780
OI8012-780
12.7x12.7x12.7
>20
780
OI8005-1064
5x5x5
>20
1064
OI8010-1064
10x10x10
>20
1064
OI8012-1064
12.7x12.7x12.7
>20
1064
OI8005-1550
5x5x5
>20
1550
OI8010-1550
10x10x10
>20
1550
OI8012-1550
12.7x12.7x12.7
>20
1550

 

Note: Other sizes, wavelength are available upon request.


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