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 |
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Item No :
Optical IsolatorProduct Origin :
FuZhouSpecifications:
Material:
|
BK7&Crystal Quartz |
Dimension Tolerance:
|
±0.2mm |
Surface Quality: | 60/40 |
Beam Deviation: | < 3 arc minutes |
Transmitted Wavefront Distortion: | λ/4@632.8nm |
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
|
Product Features and Technical Advantages of Optical Isolator:
Based on the Faraday magneto-optical effect, the optical isolator is composed of a polarizing beam splitter (PBS), a Faraday rotator, and a quarter-wave plate (λ/4 waveplate), featuring unidirectional transmission with forward insertion loss < 1.5dB and reverse isolation ≥30dB (high-performance models reach 60dB), efficiently blocking reflected light interference. It covers a working wavelength range of 400-1700nm, compatible with multi-band light sources, capable of withstanding continuous wave power up to several watts and a pulsed laser damage threshold >100MW/cm², and supports wide-temperature environments from -20°C to 80°C. Its technical advantages lie in precise polarization manipulation and high anti-interference capability, widely used in fiber optic communication, laser processing, and other scenarios to protect light source stability and enhance signal fidelity, serving as a key anti-interference component in modern optical systems.