Ascentta Polarization Maintaining (PM) Fiber Circulator (1310nm | 1480nm | 1550nm | 1590nm)

Name: Ascentta Polarization Maintaining (PM) Fiber Circulator (1310nm | 1480nm | 1550nm | 1590nm)
Brand: Ascentta
Availability: InStock

Description

The Ascentta PM 3-Port Optical Circulator is a high-performance, polarization-maintaining circulator designed for advanced optical systems operating at wavelengths of 1310, 1480, 1550, or 1590 nm. Engineered for precision, it supports both single-stage and dual-stage configurations, offering flexibility in performance requirements. With excellent isolation up to 55 dB and a low insertion loss of just 0.6 dB (typical), this circulator ensures high signal fidelity and minimal cross-talk across the system.

Designed for slow-axis polarization alignment, the circulator maintains high polarization extinction ratios—20 dB minimum for single-stage and up to 22 dB for dual-stage variants. The device supports maximum optical power handling of 300 mW and features exceptional return loss and directivity of 50 dB. Housed in a compact φ5.5 mm package, it is well-suited for integration in dense optical circuits.

This PM circulator is ideal for use in coherent transmission systems, fiber optic sensors, quantum communication setups, and fiber laser architectures. For custom configurations including working axis, fiber type, or connectorization, Ascentta offers flexible customization options to match your application needs.

Specifications

Type Of The Device:	Circulator
Operating Wavelength:	1310 nm
Max Power:	0.3 W
Min Isolation:	40 dB
Bandwidth:	+-20 nm
Extinction Ratio (Min):	Not Specified
Directivity (Min):	Not Specified
Insertion Loss (1→2, Or 2→3):	0.8 dB
Return Loss (Min.):	50 dB
Extinction Ratio (Min.):	18-22 dB
Directivity (1→3, Or 3→1):	50 dB
Operating Temperature:	-5 to +70 °C
Storage Temperature:	-40 to +85 °C
Package Dimension:	Φ5.5 × L35 mm

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Features

Broad Wavelength Options: Available at 1310, 1480, 1550, or 1590 nm for versatile deployment

High Isolation: Up to 55 dB (typical) for superior signal separation

Low Insertion Loss: As low as 0.6 dB for efficient signal transfer

Polarization Maintaining: Designed for slow-axis operation with extinction ratio up to 22 dB

High Return Loss & Directivity: Both ≥50 dB, minimizing back reflections and leakage

Compact Form Factor: φ5.5 mm diameter design fits tight optical layouts

Custom Configurable: Connector type, fiber type, and package size options available

Applications

Coherent Communication Systems: Maintains signal polarization and integrity in high-speed networks

Fiber Laser Systems: Enables efficient unidirectional light flow and feedback suppression

Quantum Optics & Communication: Maintains polarization for quantum coherence and fidelity

Fiber Sensing Systems: Ensures accurate signal routing and high extinction for interferometric setups

Test and Measurement Equipment: Integrated in PM test setups requiring low insertion loss and high isolation

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United States

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since 2020

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Frequently Asked Questions

What is the product?

The product is a Polarization Maintaining (PM) 3-Port Optical Circulator. It operates at 1310, 1480, 1550, or 1590 nm and comes in single-stage and dual-stage variants.

What is the operating wavelength of the Circulator?

The operating wavelength for the circulator can be 1310 nm, 1480 nm, 1550 nm, or 1590 nm. These wavelengths fall within the typical bands used for optical communication systems.

What is the Bandwidth of the Circulator?

The bandwidth of the circulator is ±20 nm for both the single-stage and dual-stage versions. This is the range around the central wavelength in which the circulator can operate effectively.

What is the Transmitting Direction?

The transmitting direction for the 3-port circulator is from port 1 to port 2, and from port 2 to port 3. This means that light entering port 1 will exit from port 2, and light entering port 2 will exit from port 3.

What are the Isolation values for each stage type?

For the single stage circulator, the typical Isolation at 23℃ (room temperature) is 40 dB, and the minimum is 30 dB. For the dual stage circulator, the typical Isolation is 55 dB, and the minimum is 40 dB. Isolation is the measure of how well the circulator prevents light from traveling in the opposite direction, so higher values mean better performance.

What are the Insertion Loss values for each stage type?

For the single stage circulator, the typical Insertion Loss at 23℃ is 0.6 dB, and the maximum is 0.8 dB. For the dual stage circulator, the typical Insertion Loss is 0.8 dB, and the maximum is 1.0 dB. Insertion Loss is the measure of the power loss that happens when light is transmitted through the circulator, so lower values indicate more efficient transmission.

What is the Extinction Ratio?

For the single stage circulator, the minimum Extinction Ratio is 20 dB for the slow axis only. For the dual stage circulator, the minimum Extinction Ratio is 18 dB for both axes and 22 dB for the slow axis only. The Extinction Ratio is a measure of the ability to maintain the polarization state of the transmitted light, with higher values indicating better performance.

What is the Return Loss?

The minimum Return Loss for both the single-stage and dual-stage circulators is 50 dB. The Return Loss is the measure of the power reflected back to the source, with higher values indicating less reflection and better performance.

What is the Directivity of the Circulator?

The minimum Directivity for both the single-stage and dual-stage circulators is 50 dB. Directivity is a measure of how well the circulator guides light from one port to the next without any leakage to the other ports. A higher value indicates better performance.

What is the maximum Optical Power Handling?

The maximum Optical Power Handling is 300 mW. This is the maximum level of light power that the circulator can handle without being damaged.

What are the operating and storage temperatures?

The Operating Temperature range is from -5 to 70 degrees Celsius, and the Storage Temperature range is from -40 to 85 degrees Celsius. These ranges indicate the temperatures within which the circulator can operate safely and be stored without damage.

What are the package dimensions?

The Package Dimensions are Φ5.5 x L38 mm or box type.