Fiber Isolators & Circulators for Precision Light Routing

Ascentta Isolator-WDM Hybrid (IWDM)

Ascentta Isolator-WDM Hybrid (IWDM)

$145.00
Sold by: Ascentta Ships from: United States
Specifications
Type Of The Device: Isolator
Max Power: 0.3 W
Wavelength: 1480/1550, 1480/1590, 980/1550, or 980/1590 nm
Isolation: 30 (single-stage) or 44 (dual-stage) dB
Signal Bandwidth: 40 nm

Did You Know?

Fiber isolators and fiber circulators are essential passive components in modern optical systems, ensuring signal integrity and enhancing performance. Fiber isolators are non-reciprocal devices that allow light to pass in only one direction, effectively preventing back-reflected light from reaching sensitive components like lasers. This protection is crucial in maintaining the stability and longevity of laser sources and optical amplifiers. On the other hand, fiber circulators are multi-port devices that direct light sequentially from one port to the next, enabling bidirectional communication over a single fiber. They are instrumental in advanced applications such as Dense Wavelength Division Multiplexing (DWDM) systems, optical add-drop multiplexing, and fiber-optic sensing. Both components are vital in high-speed communication networks, ensuring efficient signal routing and minimizing interference. Their integration into optical systems leads to improved performance, reduced noise, and enhanced reliability.
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Frequently Asked Questions

A fiber isolator is a two-port, non-reciprocal device that allows light to pass in one direction while strongly attenuating back-reflected light in the reverse direction, protecting lasers and sensitive components from feedback. A fiber circulator is a multi-port (typically 3-port) non-reciprocal device that routes light sequentially from port 1→2, 2→3, etc., enabling bidirectional traffic on a single fiber or advanced functions like add/drop in fiber systems.

Overview of Fiber Isolators & Circulators

Fiber Isolators & Circulators are passive fiber-optic components used to control the direction of light propagation and to protect sensitive sources from back reflections. Fiber isolators pass light in one direction with low insertion loss while providing high isolation in the reverse direction. Fiber circulators route optical signals sequentially between ports (e.g., port 1 → 2 → 3), enabling bidirectional transmission and advanced network topologies.

On FindLight, Fiber Isolators & Circulators are available for single-mode, polarization-maintaining (PM), and specialty fibers, covering applications from telecom and datacom links to fiber lasers, sensing, and test systems.

Typical Specifications and Configurations

Key parameters to evaluate when selecting Fiber Isolators and Circulators include:

  • Operating wavelength / band: Common windows at 780 nm, 850 nm, 1064 nm, 1310 nm, 1550 nm, C/L bands, and custom wavelengths.
  • Isolation: Typically 25–40 dB for standard models, higher for premium designs; specified over bandwidth and temperature.
  • Insertion loss: Often 0.3–1.0 dB per device, depending on wavelength, fiber type, and port count.
  • Return loss: Fiber Isolators & Circulators generally specify >50 dB return loss to minimize back reflections.
  • Polarization: Options for PM and non-PM; PM versions specify extinction ratio (e.g., >20 dB) and keying.
  • Power handling: Ranges from a few hundred mW for telecom components to multi-watt or kW-class for high-power fiber lasers.
  • Port count and configuration: 2-port and 3-port devices are most common; circulators may offer 3 or more ports.
  • Package type: In-line pigtail, miniaturized, rack-mount, or module formats; connectorized or bare fiber pigtails.

Use Cases and Buyer Guidance

Fiber Isolators and Circulators are widely used in EDFA amplifiers, WDM systems, bidirectional links, fiber laser cavities, interferometric sensors, and optical test and measurement setups. Isolators prevent instability and noise induced by back reflections, while circulators enable channel monitoring, add/drop multiplexing, and reflection-based sensing.

When sourcing Fiber Isolators & Circulators on FindLight, compare detailed datasheets for wavelength coverage, isolation vs. temperature, insertion loss, PM alignment, and power rating. Check fiber type and connector options for compatibility with your existing infrastructure. For high-power or custom wavelength requirements, pay particular attention to damage thresholds and thermal performance.

You can request quotes directly from multiple suppliers for any Fiber Isolators & Circulators listed, specify custom pigtail lengths or connectors, and discuss OEM volumes. No registration is required to submit RFQs, allowing rapid comparison of pricing, lead times, and technical options for your design or procurement project.