Key Features
- High-power handling capabilities, supporting up to 500 W for diverse applications.
- Exceptional optical isolation with options exceeding 50 dB for dual-stage models.
- Low insertion loss of less than 0.6 dB, ensuring efficient signal transmission.
- Versatile wavelength compatibility spanning 850 nm to 2000 nm.
- Customizable configurations, including fiber type, pigtail diameter, and housing dimensions.

General Description
The in-line isolators offered by POC are cutting-edge devices designed to provide optical isolation via fiber optic coupling. These devices are essential for preventing unwanted back reflections and scattered light, enhancing system performance and stability.
POC in-line isolators are available in two primary types:
- Non-Polarization-Maintaining In-Line Isolators: Ideal for general optical systems, featuring components such as birefringent crystals, Faraday rotators, and collimators to deliver high isolation.
- Polarization-Maintaining In-Line Isolators: Designed for systems requiring the preservation of polarization states, utilizing polarizers and half-wave plates for steady transmittance.
With a robust design capable of handling high power, minimal insertion loss, and a wide wavelength range, POC in-line isolators excel in applications such as DWDM systems, optical coherence detection, and fiber communications. These isolators are built for durability and environmental stability, ensuring long-term reliability even in demanding conditions.
General Applications and Examples
- EDFA (Erbium-Doped Fiber Amplifiers):
In-line isolators are integral components in EDFA setups, enhancing amplification efficiency by eliminating feedback and preventing system instabilities caused by reflected light. - DWDM Systems (Dense Wavelength Division Multiplexing):
POC isolators support high-density data transmission by ensuring signal isolation across multiple wavelengths, boosting system throughput and reducing cross-channel interference. - Optical Coherence Detection:
These isolators improve the precision of coherence-based measurements, such as OCT (Optical Coherence Tomography), by suppressing noise and unwanted reflections in the optical path. - Laser Sensing and Fiber Communication:
POC isolators are critical in ensuring accurate data transmission in sensing and telecommunication systems, delivering clean, reliable signals over extended distances.
Our Standard Products and Model Numbers
| Type | Power | Fiber Type | Wavelength (nm) | Pigtail Diameter | Fiber Length | Filter | Housing |
|---|---|---|---|---|---|---|---|
| IL (Common) | 0.3–500 W | HI1060 | 980–1940 | 900 μm Loose Tube / 3 mm Loose Tube | 1 m / 1.5 m | Contained / Not Contained | A03 / A08 |
Typical Specifications
| Withstand Power | Insertion Loss | Peak Isolation |
|---|---|---|
| 5 W | <0.6 dB * | >33 dB *, >50 dB ** |
| 100 W | <0.6 dB | >33 dB |
| 500 W | <0.6 dB | >33 dB |
* Only applicable to single-stage isolator
** Only applicable to dual-stage isolator
Housing Dimensions (mm)
- A01: 96 x 34 x 30 (see detailed diagram for port alignment and mounting specifics).
- A33: 73 x 49 x 25 (optimized for compact installations with robust port fittings).





