1550 ±15 nm 0.5 W Dual-Stage PM Isolator with FC/APC Connectors for Fiber Laser

The 1550 nm Dual-Stage PM Isolator is a polarization-maintaining optical component designed for one-way signal transmission within a 1550 ±15 nm operating band.

• Dual-stage isolation structure — provides ≥45 dB isolation to reduce backward-propagating optical signals.
• 1550 ±15 nm operating band — supports polarization-maintaining optical systems centered around 1550 nm.
• Insertion loss of ≤0.9 dB — helps control forward-path loss within the optical power budget.
• Extinction ratio of ≥21 dB — supports preservation of the required polarization state through the isolator.
• Return loss of ≥55 dB — helps limit reflections at the specified optical interfaces.
• Slow-axis transmission with fast-axis blocking — provides a defined polarization path for PM fiber systems.
• Corning PM1550 fiber with FC/APC connectors — supports integration into connectorized polarization-maintaining assemblies.
• Directional steel tube package — uses an arrow-marked Ø5.5 × 38 mm housing to identify the permitted transmission direction.

• Polarization-maintaining fiber laser systems
• 1550 nm fiber amplifier assemblies
• Polarization-sensitive optical sources
• Coherent optical communication subsystems
• Fiber interferometers
• Fiber sensing systems
• PM optical test equipment
• C-band photonic subsystem integration

Optical performance can be tested according to the agreed specification. Key parameters are verified before shipment, including insertion loss, isolation, extinction ratio, and return loss when included in the approved inspection criteria. Test reports can be provided upon request in a neutral English format. Customized inspection requirements can be discussed, including axis alignment, transmission direction, connector inspection, and optical power test conditions.

• Polarization-oriented system integration: Slow-axis transmission and fast-axis blocking provide a defined optical-axis configuration for PM assemblies.
• Dual-stage isolation: The specified ≥45 dB isolation supports systems requiring additional suppression of backward-propagating light.
• Connectorized mechanical format: FC/APC connectors, protected pigtails, and an arrow-marked steel package support installation and directional identification.
• Engineering review support: Axis orientation, connector key alignment, fiber length, package marking, and test conditions can be reviewed before production.
• Testing documentation: Agreed optical parameters can be recorded in a neutral English test report for sample validation and order inspection.

It allows optical signals to propagate in one specified direction while reducing backward-propagating light in polarization-maintaining fiber systems.

A dual-stage structure is used when the system requires a higher isolation specification than the stated configuration can provide with a single optical stage. This product is specified with isolation of at least 45 dB.

The supplied operating wavelength is 1550 ±15 nm. Confirmation is required on whether all optical limits apply across the full wavelength range.

The slow axis is specified as the working axis, while the fast axis is blocked. The exact relationship between the slow axis and the connector key should be defined in the approved drawing.

The configuration uses Corning PM1550 fiber and FC/APC connectors. The supplied connector brand name appears to refer to SENKO, subject to confirmation.

An arrow is marked on the Ø5.5 × 38 mm steel tube. The arrow should correspond to the approved input-to-output transmission direction.

The supplied requirement specifies 0.5 W. The applicable wavelength, continuous or pulsed operating mode, temperature, and test conditions should be confirmed before order approval.

Please provide the operating wavelength, port configuration, fiber type, working axis, connector type, fiber length, package requirement, target IL, isolation, ER, RL, optical power, operating temperature, and estimated quantity.

For a technical review or quotation, please provide the required operating wavelength, channel or port configuration, fiber type, connector type, fiber length, package requirement, target optical specifications, optical power, axis orientation, and estimated quantity. Connector key alignment, arrow direction, number-sleeve definition, and test-report requirements should also be included.