Optical Isolator

  • The optical isolators allow the transmission of light in only one direction. The operation of the optical isolators depend on the Faraday effect which is magneto-optic effect, so they are also called Faraday Isolators. Most of them are used with laser systems so they are also called laser isolators.
  • The optical isolators are specially designed to be compact in size and with high transmission and low loss for the laser wavelength. the single stage isolators provide >93 % transmission with >35 dB isolation and dual stage isolators provide 60 dB isolation and 85% transmission Compact optical Isolators for UV visible IR wavelength range from 248nm to 1600nm available
  • Current standard aperture size is 3 mm, 4 mm. Aperture size of 2 mm, 3 mm, 4 mm, 5 mm and up to 12 mm is available.
  • Broadband optical isolators and tunable free-space optical isolators for tunable diode lasers and Ti:Sapphire Lasers are also available on request.

光隔离器 插图

The Optical Isolators are suitable for following applications

  • Prevent laser and cavity optics from unwanted back reflection
  • Optical Diode, unidirectional light transmission
  • Prevent laser cavity optics from the damage of high power laser beam back reflection
  • Protection for a seed laser
  • Stabilize laser power by reduce the back reflection interferences, reduce amplitude noise
  • Stabilize laser output spectrum to prevent mode hopping or frequency shifts
  • Dual stage isolators provide double isolation

Features:

  • Compact size easily fit in optical paths
  • Faraday isolator with high isolation
  • High transmission with low loss
  • High laser through out power and high laser damage resistant, please contact 10G-Link for detail
  • Isolators with high power handling option provide input and output rejecting beam exits. Rejecting beam Exits (E) should be selected if forward laser >10 W or rejected laser power >1W or 0.1J/cm2 at 10ns. The I-1064-05E isolator can handle power 100W, 25kW/cm2, 10J/cm2 at 1064nm 10ns
  • Dual-stage otical isolators provide double isolation up to 60dB
  • Compact Broadband and Wide Band Optical Isolators is available from 390nm to 1200nm. The isolation spectrum bandwidth is expanded 5X to 10X wider than that for standard optical isolators
  • Compact Faraday Rotator provides customer required rotation angle with high transmission of 98% to 99.8%

 

Specification

Parameters

P Grade

A Grade

Wavelength (nm)

1310 or 1550

Max Isolation(dB)

≥42

≥40

Isolation(dB)

≥32

≥30

Insertion Loss (Typ.) (dB)

0.3

0.4

Insertion Loss (dB)

≤0.5

≤0.7

Return Loss (dB)

≥65/60

≥60/55

PDL (dB)

< 0.05

< 0.1

PMD (ps)

0.2(0.05 available upon request)

Bandwidth(nm)

±15

Operating Temperature (°C)

-20 + 70

Storage Temperature (°C)

-40 +85

Fiber Type

Corning SMF-28

Fiber Length (Min.)

1 Meter Each End

Dimensions (mm)

5.5×35

Rated power (mW)

500

* within the  23° bandwidth
** Not including connector, weld and end loss
*** Cover the PDL whole bandwidth, all temperatures

Ordering information

Isolator Type

SIS=Single stage

Operating wavelength

13=1310nm
14=1480nm
15=1550nm
LB=L- Band

Grade

S=Special Grade

P=P Grade

A=A Grade

Fiber diameter

1=Bare fiber 2=900um buffer 3=3mm cable

Fiber Length

1=1.0m
2=1.5m
3=2.0m
4=customized

Connector

0=None
1=FC/APC
2=FC/PC
3=SC/APC
4=SC/PC
5=ST
6=LC