Free Space Isolator

Product Details

Free Space Isolators FSI

fiber's Faraday isolator are devices that allow light to pass in one direction while blocking reflections in the opposite direction. They are used in free-space optical systems, where light travels through air or vacuum, rather than through optical fibers.

Features
• High isolation and low insertion loss
•Polarization dependent
• Compact size
• RoHS 6/6 compliant

Applications
• Optical transmitter
• Laser diode package

Specifications (Standard)

Single Stage

Parameters		Unit	P Grade
Center Wavelength (λc)		nm	1270~1610
Operating Wavelength(λc)		nm	±20
Isolation (λ at 25°C)	Min	dB	>30
Overall wavelengths and temperature Isolation		dB	>20
Insertion Loss (λ at 25°C)	Max	dB	0.30
Clear Aperture		mm	Φ0.4~ or Φ0.12 or others
Operating Temperature		℃	-40 to +85
Storage Temperature		℃	-40 to +95

Dual Stage

Parameters		Unit	P Grade
Center Wavelength (λc)		nm	1270~1610
Operating Wavelength(λc)		nm	±20
Isolation (λ at 25°C)	Min	dB	>55
Overall wavelengths and temperature Isolation		dB	>30
Insertion Loss (λ at 25°C)	Max	dB	0.50
Clear Aperture		mm	Φ0.4~ or Φ0.12 or others
Operating Temperature		℃	-40 to +85
Storage Temperature		℃	-40 to +95

Ordering Information

FSI－A－B－C－D－E－F－G

Single/Dual Stage

Grade

Center Wavelength

Size

Angle

S: Single stage

D: Dual stage

Z: Positive

F: In reverse

P: P-grade

31: 1310nm

49: 1490nm

55: 1550nm

X: Customized

01:Φ2.5*L1.1mm

02:Φ2.5*L1.4mm

03:Φ2.5*L2.0mm

04:Φ2.99*L1.4mm

40: CA≥Φ0.40mm

50: CA≥Φ0.50mm

60: CA≥Φ0.60mm

70: CA≥Φ0.70mm

80: CA≥Φ0.80mm

90: CA≥Φ0.90mm

X: Customized

0:0 degree

6:6 degree

7:7 degree

8:8 degree

X: Customized