Ultra-small Size Polarization Maintaining Isolator

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Ultra-small Size Polarization Maintaining Isolator

Kerns Technology is a premier manufacturer of ultra-compact PM optical isolators in China. We provide tailored selections matching your ideal features, specifications, and system needs. We can custom the ultra-small size PM isolator you ordered.

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Product Description

Product Description

The Kerns Technology Ultra-small Size Polarization Maintaining (PM) Isolator is a miniaturized passive optical component engineered to block reverse-propagating light (back-reflections) while preserving the polarization state of forward signals. It supports key wavelengths (1550/1310/1064/1030nm) and features a tiny package (φ3.0×30mm/φ3.2×30mm)—ideal for space-constrained systems.

Available in dual-axis working or fast-axis blocked configurations, this isolator delivers industry-leading performance: typical insertion loss as low as 0.55dB (1550nm), extinction ratio ≥22dB, and 500mW CW power handling. Its PM Panda fiber compatibility, wide operating temperature (-5~+70°C), and flexible connector options make it a core component for high-precision polarization-sensitive systems.

Product Features

1. Ultra-small Form Factor

Package size as compact as φ3.0×30mm—enables integration into miniaturized devices (e.g., portable test equipment, compact fiber sensors) where space is critical.

2. High Polarization Preservation

Extinction ratio ≥22dB (PM Panda fiber) ensures stable polarization state transmission, essential for fiber gyroscopes, coherent telecom, and precision sensing.

3. Low Loss & High Isolation

Typical insertion loss: 0.55dB (1550nm, dual-axis working) minimizes signal attenuation
Isolation ≥28dB (1550/1064nm) effectively blocks back-reflections to protect laser sources.

4. Flexible Configuration

Wavelength options: 1550/1310/1064/1030nm (matches common PM system bands)
Working axis modes: Dual-axis working (full polarization support) or fast-axis blocked (customized for specific polarization needs)
Power handling: Up to 500mW CW (1064nm: 300mW; 1030nm: 50mW)

Product Applications

This ultra-small PM isolator is widely used in:

Compact Fiber Sensors: Preserves polarization for miniaturized current/gyro sensors in aerospace and industrial monitoring.
Portable Test Equipment: Fits into handheld optical analyzers and laser characterization tools.
Coherent Telecom Systems: Protects 1550nm laser sources in compact optical transceivers.
Scientific Research: Supports polarization-sensitive experiments in quantum optics and photonics.

Technical Specification Table (Key Wavelengths)

Parameter	1550nm	1064nm	1030nm
Operating Wavelength Range	±20nm	±5nm	±5nm
Min Isolation (@23°C)	28dB	28dB	20dB
Max Insertion Loss (@23°C, Dual-axis)	0.55dB	1.8dB	3.5dB
Min Extinction Ratio (@23°C)	22dB	22dB	22dB
Max Power (CW)	500mW	300mW	50mW
Fiber Type	PM Panda Fiber	PM Panda Fiber	PM Panda Fiber
Package Size	φ3.0×30mm/φ3.2×30mm	φ3.0×30mm/φ3.2×30mm	φ3.0×30mm/φ3.2×30mm

FAQs

Q1: What is the benefit of the ultra-small size?

A1: It enables integration into space-constrained systems (e.g., portable devices, miniaturized sensors) that cannot accommodate standard-sized isolators, while maintaining full PM performance.

Q2: How do connectors affect performance?

A2: With connectors, insertion loss increases by 0.3dB, return loss decreases by 5dB, and extinction ratio drops by 2dB. We align connectors to the fiber slow axis for minimal polarization impact.

Q3: Can I choose the working axis mode?

A3: Yes. Dual-axis working supports full polarization transmission, while fast-axis blocked is optimized for systems requiring only slow-axis polarization—both options are customizable.

Q4: Is this isolator suitable for high-power applications?

A4: It supports up to 500mW CW (1550nm) — ideal for low-to-medium power PM systems. For higher power needs, we offer customized high-power ultra-small PM isolators.

Ultra-small Size Polarization Maintaining Isolator polarization maintaining isolator

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Shenzhen Kerns Technology Co., Ltd. specializes in fiber optic components such as fiber couplers, beam combiners, and optical circulators, serving industries like telecommunications, data centers, and medical devices. We offer customized solutions tailored to specific needs and provide professional laser equipment repair services, including remote troubleshooting and factory repairs. Kerns is dedicated to delivering high-quality products and reliable support to ensure optimal system performance.