Laser source protection
Faraday Isolator: Reverse isolation reduces feedback into the laser cavity, while forward insertion loss and thermal load must stay within the source budget.
Free Space Faraday Isolator
| Standard Products | ||||
|---|---|---|---|---|
| Model | C-HP-3-405 | C-HP-2-532 | C-HP-3-633 | C-HP-2.3-785 |
| Center Wavelength | 405nm | 532nm | 633nm | 785nm |
| Operating Wavelength Range | +/- 10nm | +/- 10nm | +/- 10nm | +/- 10nm |
| Peak Transmission | >90% | >93% | >93% | >93% |
| Clear Aperture | 3 | 2 | 3 | 2.3 |
| Isolation | ≥25db | ≥25db | ≥25db | ≥25db |
| Damage Threshold | 10J/cm 2 @ 10ns | 10J/cm 2 @ 10ns | 10J/cm 2 @ 10ns | 10J/cm 2 @ 10ns |
| Storage Temperature | 20~70 ℃ | 20~70 ℃ | 20~70 ℃ | 20~70 ℃ |
| Operating Temperature | 10~30℃ | 10~30℃ | 10~30℃ | 10~30℃ |
Application context
Why this design is used
Application fit depends on the ordered configuration; catalog values are separated from fields that still require confirmation.
Bidirectional optical routing
Faraday Isolator: A circulator separates counter-propagating signals by port, so isolation and connector return loss control channel leakage.
Engineering reference
Specify Faraday Isolator from the interfaces inward
Faraday Isolator is a configurable non-reciprocal optical component in the Laser components and accessories family. The final part number should be released only after the optical, mechanical, electrical and environmental fields below are matched to the intended instrument.
An isolator or circulator uses non-reciprocal polarization rotation to control propagation direction. Isolation, insertion loss, polarization architecture and power handling must be specified at the actual wavelength and temperature.
Selection guidance describes the engineering fields that must be checked. It does not assign an option-dependent value that is absent from the catalog record.
Configuration fields to confirm
- Operating wavelength
- Confirm center wavelength, usable bandwidth and temperature-induced wavelength shift.
- Isolation
- State required minimum isolation and whether one or two stages are needed.
- Insertion and return loss
- Include forward loss and reflection limits in the complete source power budget.
- Polarization architecture
- Choose polarization-independent, PM or free-space operation and define input polarization.
- Power handling
- Provide average and peak power, beam diameter or fiber parameters and damage-threshold margin.
- Mechanical interface
- Confirm aperture, package dimensions, fiber termination and mounting method.
Qualification sequence
- 1Define the measurement objective and the performance limit that Faraday Isolator must satisfy.
- 2Freeze wavelength, mechanical, fiber and electrical interfaces before selecting option codes.
- 3Check loss, noise, heat, motion or vibration contributions in the complete system budget.
- 4Confirm the final drawing, pinout, environmental suffix and acceptance test with the quotation.
Technical FAQ
Configuration questions for Faraday Isolator
What must be specified before ordering Faraday Isolator?
Confirm operating wavelength, isolation, insertion and return loss, polarization architecture, power handling, and mechanical interface. These fields are coupled, so the final part number should be checked against the complete instrument rather than selected from the model name alone.
How should Faraday Isolator be integrated into the system?
An isolator or circulator uses non-reciprocal polarization rotation to control propagation direction. Isolation, insertion loss, polarization architecture and power handling must be specified at the actual wavelength and temperature. Freeze the optical, mechanical and electrical interfaces before releasing the surrounding assembly.
Which documentation should be approved for Faraday Isolator?
Approve the configuration-specific specification, mechanical drawing, connector or pinout definition, environmental suffix and acceptance-test limits supplied with the quotation. Any field absent from the local record remains a confirmation item, not an assumed capability.