TGG Material In-line Isolator

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TGG Material In-line Isolator

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

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Product Description

Product Description

The Kerns Technology TGG Material In-line Isolator is a high-performance passive optical component built on Terbium Gallium Garnet (TGG) material—an ideal Faraday rotator for polarization-insensitive light isolation. It is engineered to block reverse-propagating light (e.g., back-reflections) while transmitting forward signals, protecting laser sources and enhancing system stability.

Available in multiple center wavelengths (850/980/1030/1060/1080nm), this isolator delivers industry-leading performance: peak isolation up to 42dB, typical insertion loss as low as 0.7dB, and support for 0.3-50W average power (10kW peak power). Its compact 683228mm package, compatibility with HI1060/LMA fibers, and wide operating temperature (0~+65°C) make it suitable for high-power laser, amplifier, and communication systems.

Product Features

1. TGG Material Advantage

TGG’s high Verdet constant ensures efficient Faraday rotation, enabling high isolation (35-42dB) and polarization insensitivity—critical for suppressing back-reflections in diverse optical systems.

2. Ultra-Low Loss & High Isolation

Typical insertion loss: 0.7dB (≤1.0dB max) minimizes signal attenuation
Peak isolation: 35-42dB blocks reverse light to protect laser diodes and components

3. High Power Handling

Supports 0.3-50W average power (10kW peak power), meeting the demands of high-power fiber lasers and amplifiers (outperforming standard isolators with <20W capacity).

4. Flexible Compatibility

Multiple center wavelengths: 850/980/1030/1060/1080nm (matches common laser/signal bands)
Fiber options: HI1060 or LMA 10-30um fiber (adapts to low/high-power system requirements)

5. Robust & Compact Design

Compact 683228mm package for space-constrained setups
Wide operating temperature (0~+65°C) for industrial deployment

Product Applications

This TGG in-line isolator is widely used in:

High-Power Fiber Lasers: Protects laser sources from back-reflected light in material processing (cutting/welding) systems.
Fiber Amplifiers: Blocks reverse signals to stabilize gain and extend amplifier lifespan.
Optical Communication Links: Reduces interference from back-scattered light in long-haul transmission systems.
Test & Measurement Equipment: Ensures signal integrity in laser characterization and optical network testing.

Technical Specification Table

Parameter	Value
Center Wavelength	850, 980, 1030, 1060, 1080 nm
Bandwidth	10 nm
Peak Isolation	35-42 dB
Isolation (@23°C)	≥25 dB
Insertion Loss (@23°C)	≤1.0 dB (Typ. 0.7 dB)
Polarization-Dependent Loss	≤0.15 dB
Return Loss (Input/Output)	≥50/50 dB
Average Power	0.3-50 W
Peak Power	10 kW
Fiber Type	HI1060 fiber or LMA 10-30um fiber
Operating Temperature	0~+65°C
Storage Temperature	-20~+85°C
Package Size	683228 mm

FAQs

Q1: What is the key role of a TGG in-line isolator?

A1: It blocks reverse-propagating light (e.g., back-reflections from optical components) to prevent damage to laser sources, reduce signal interference, and improve system stability.

Q2: Can this isolator be customized for higher power?

A2: Yes. We offer standard 0.3-50W configurations and can design high-power versions (up to 100W average power) with reinforced packaging for specialized applications.

Q3: Is this isolator compatible with polarization-maintaining (PM) fiber?

A3: It is designed for non-PM systems (HI1060/LMA fibers), but we can provide PM-compatible TGG isolators for polarization-sensitive setups.

Q4: How does temperature affect isolation performance?

A4: Isolation is ≥25dB at 23°C; performance remains stable within the 0~+65°C operating range, with minimal drift (≤1dB) under normal conditions.

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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.