JDSU MAPA+2370290FP Dual-Channel Single-Mode Precision Optical Attenuator with Monitor Ports

JDSU MAPA+2370290FP Dual-Channel Single-Mode Precision Optical Attenuator with Monitor Ports

The JDSU MAPA+2370290FP is a dual-channel single-mode precision optical attenuator cassette designed for compatible JDSU Multiple Application Platform systems. It integrates two identical variable optical attenuators into one cassette, providing independently controlled attenuation channels for laboratory, production, DWDM, telecom, and automated optical test applications.

This configuration includes monitor-port functionality for observing optical power within the test setup. The monitor connections can support external optical power measurement, calibration, and control workflows while the primary optical paths provide adjustable attenuation. The exact monitor-port implementation and included external measurement equipment should be confirmed from the product configuration and listing photographs.

The attenuator supports wavelengths from 1260 nm to 1650 nm and provides up to 60 dB of attenuation on each channel. Attenuation can be configured with 0.001 dB setting resolution, supporting precise simulation of optical loss and controlled adjustment of optical signal levels.

Features and Benefits of the JDSU MAPA+2370290FP

The JDSU MAPA+2370290FP provides two precision attenuation channels for engineers, laboratories, production facilities, and service organizations working with single-mode optical systems.

• Dual attenuator configuration: Integrates two identical precision optical attenuators into one MAP cassette.
• Single-mode fiber design: Supports compatible 9/125 µm single-mode fiber test systems.
• Monitor-port functionality: Provides monitor connections for compatible external optical power measurement and control workflows.
• Wide wavelength range: Supports optical signals from 1260 nm to 1650 nm.
• 60 dB attenuation range: Provides extensive optical loss adjustment for receiver, amplifier, and network simulation tests.
• High attenuation resolution: Supports attenuation settings in increments as small as 0.001 dB.
• Precise attenuation control: Provides attenuation accuracy of ±0.1 dB under the specified conditions.
• High repeatability: Provides attenuation repeatability of ±0.01 dB.
• Fast attenuation adjustment: Provides a nominal attenuation slew rate greater than 10 dB per second.
• High optical input capability: Accepts optical input power up to +23 dBm.
• Optical shutter function: Provides shutter isolation greater than 100 dB.
• MAP platform integration: Supports local and automated optical test configurations through a compatible JDSU MAP chassis.

Dual-Channel Precision Attenuation

The dual-channel design allows two single-mode optical paths to be attenuated within the same cassette. Each channel can support a separate optical source, receiver, component path, or device under test, depending on the configuration of the compatible MAP chassis and control system.

This architecture is useful in applications that require matched attenuation channels, simultaneous test paths, bidirectional system evaluation, or independent control of two optical signals. Combining two attenuators in one cassette can also conserve MAP chassis space compared with using two separate single-channel attenuation modules.

Each channel provides a 60 dB attenuation range, excluding insertion loss. The 0.001 dB setting resolution allows small optical-level changes to be programmed for detailed receiver sensitivity, amplifier response, loss simulation, and power-control procedures.

Monitor-Port Functionality

The monitor ports provide access to a portion of the optical signal for compatible external measurement equipment. This can be useful for observing source-power variation, calibrating the relationship between attenuation and output power, or monitoring the optical signal during a test sequence.

When a monitor port is used with an external optical power meter, the measured monitor level can help operators or automated software evaluate changes in input or output power. The complete measurement arrangement may require calibration of the monitor path and compensation for the applicable tap ratio and path loss.

The monitor ports should not be interpreted as independent optical power meters unless the product configuration includes an internal power-monitor function. External optical power meters, detector heads, patch cables, calibration data, and control software should not be assumed to be included unless specifically identified in the product listing.

Precise Optical Power Control

The JDSU MAP Precision Attenuator is designed for applications requiring controlled optical signal levels. Users can program a known attenuation value and calculate the resulting output level from the measured input power and optical path characteristics.

The specified attenuation accuracy is ±0.1 dB at the defined single-mode reference wavelengths and temperature conditions. Attenuation repeatability is ±0.01 dB at constant wavelength, temperature, and state of polarization.

The module provides a nominal attenuation slew rate greater than 10 dB per second. This capability supports automated attenuation sweeps, optical threshold measurements, receiver testing, and production procedures requiring rapid changes in optical power.

DWDM and Optical Network Testing

The 1260 nm to 1650 nm wavelength range supports broad single-mode optical testing, including common telecom windows around 1310 nm and 1550 nm. The module can be used in DWDM systems for channel equalization, optical amplifier evaluation, receiver testing, and fiber-link loss simulation.

In a DWDM test system, the dual attenuators can control separate channels or optical paths. The monitor ports can support external observation of the signals while attenuation values are changed through the MAP platform.

The exact wavelength-dependent performance, connector return loss, and insertion loss depend on the installed connector configuration, monitor implementation, test wavelength, fiber condition, and complete optical path.

Typical Applications

The JDSU MAPA+2370290FP Dual-Channel Precision Optical Attenuator is suitable for professional applications such as:

• Dual-channel single-mode optical attenuation
• DWDM channel equalization
• Optical amplifier characterization
• Bit error rate testing
• Receiver sensitivity measurement
• Transmitter and receiver testing
• Optical fiber-link loss simulation
• Precise optical power control
• Optical component characterization
• Production testing and quality control
• Laboratory research and development
• Automated MAP optical test systems

Product Overview

Brand	JDSU / JDS Uniphase
Model	MAPA+2370290FP
Product Family	MAP Precision Attenuator
Product Category	Dual-Channel Precision Optical Attenuator
Cassette Configuration	Dual attenuator
Fiber Type	9/125 µm single-mode fiber
Additional Optical Function	Monitor ports
Connector Configuration	FC/PC
Compatible Platform	Compatible JDSU MAP chassis
Primary Application	Dual-channel attenuation and optical power monitoring in single-mode test systems

 

Single-Mode Attenuator Specifications

Specification	JDSU MAPA+2370290FP Details
Number of Attenuators	Two identical channels
Wavelength Range	1260 nm to 1650 nm
Attenuation Range	60 dB
Attenuation Setting Resolution	0.001 dB
Attenuation Accuracy	±0.1 dB
Attenuation Repeatability	±0.01 dB
Nominal Attenuation Slew Rate	Greater than 10 dB per second, typical
Maximum Optical Input Power	+23 dBm
Shutter Isolation	Greater than 100 dB
Fiber Type	Single-mode fiber

 

Optical Performance Considerations

Insertion loss depends on the monitor-port implementation and installed optical configuration. A standard single-mode MAP Precision Attenuator without a power monitor has insertion loss of 1.5 dB or less at minimum attenuation, while a single-mode configuration with an in-line power monitor has insertion loss of 2.2 dB or less.

Polarization-dependent loss is specified at 0.05 dB or less for a standard single-mode attenuator and 0.15 dB or less for a single-mode configuration with an in-line power monitor. A separate monitor-tap coupler may introduce additional loss that is not included in the base attenuator specification.

For PC connector configurations, return loss is specified above 45 dB. APC configurations provide return loss above 60 dB. The installed FC/PC interfaces should be maintained carefully to preserve return loss and measurement repeatability.

Performance Parameter	Standard SM Attenuator	SM Attenuator with In-Line Power Monitor
Insertion Loss at Minimum Attenuation	1.5 dB or less	2.2 dB or less
Polarization-Dependent Loss	0.05 dB or less	0.15 dB or less
Return Loss, APC / PC	Greater than 60 dB / 45 dB	Greater than 60 dB / 45 dB

 

Specification Conditions

Single-mode insertion loss is specified at wavelengths of 1310 nm ±15 nm and 1550 nm ±15 nm and includes one mated pair of connectors. The stated insertion-loss value does not include additional tap-coupler loss when a monitor tap is installed.

Attenuation accuracy and repeatability are specified at an ambient temperature of 23 °C ±5 °C. Repeatability is measured at constant wavelength, constant temperature, and constant state of polarization.

The maximum attenuation-accuracy specification applies at 1310 nm ±15 nm and 1550 nm ±15 nm. Outside these wavelength bands, typical accuracy is the greater of ±0.1 dB or ±0.003 dB per dB of attenuation.

Environmental and Mechanical Specifications

Specification	Details
Operating Temperature	0 °C to 50 °C
Storage Temperature	-30 °C to 60 °C
Operating Humidity	Less than 90% relative humidity at 23 °C and less than 20% at 50 °C, non-condensing
Dimensions	4.06 cm wide x 13.24 cm high x 39.5 cm deep
Dual-Cassette Weight	Approximately 1.3 kg
Warm-Up Time	30 minutes
Recommended Calibration Period	Two years

 

MAP Platform Integration

The JDSU MAPA+2370290FP requires a compatible MAP chassis for power, display, local control, attenuation settings, shutter operation, and automation access. The cassette does not function as a completely independent optical attenuator without a supported MAP platform or compatible stand-alone controller configuration.

A MAP system can combine the dual attenuator with compatible laser sources, optical power meters, optical switches, and other photonic test modules. This enables the creation of integrated test stations for receiver evaluation, amplifier testing, DWDM component characterization, and automated production workflows.

Buyers should verify MAP chassis compatibility, available slot capacity, firmware support, automation interfaces, and the condition of the chassis module connectors before installation.

Measurement Preparation and Connector Care

The MAP Precision Attenuator should complete its specified 30-minute warm-up period before precision measurements. The wavelength, attenuation values, shutter state, and monitor configuration should be verified before optical power is applied.

The input power should remain at or below the specified maximum of +23 dBm. Signals above this limit should be reduced before connection to prevent damage to the optical components.

All FC/PC connector end faces should be inspected and cleaned before mating. Contamination can increase insertion loss, reduce return loss, create optical instability, and affect attenuation repeatability.

FC/PC and FC/APC connectors use different end-face geometries and should not be mated directly. Patch cables should match the installed connector polish and should be routed with suitable strain relief and bend-radius control.

Calibration and Testing Before Shipment

When calibration is technically applicable and supported, the JDSU MAPA+2370290FP is calibrated before shipment. The calibration process may include both attenuation channels and verification of attenuation accuracy, repeatability, insertion loss, wavelength response, monitor-port operation, optical shutter isolation, and automated control.

Following successful calibration, the cassette may include a calibration label, calibration certificate, and related calibration data, depending on the equipment configuration and calibration service. The specified calibration period for the MAP Precision Attenuator is two years.

If formal calibration is unavailable or not applicable to the specific cassette configuration, the unit receives comprehensive functional and performance testing. This process may include compatible-chassis recognition, independent operation of both attenuation channels, monitor-port continuity, attenuation adjustment, shutter operation, connector inspection, and evaluation of available optical performance.

This testing helps verify that the equipment operates correctly and that its available functions have been evaluated before it is released for shipment. The exact calibration scope, monitor-port configuration, documentation, test data, and service records should be confirmed before purchase when these items are required for laboratory, production, regulatory, or quality-management applications.

Buyer Considerations

The JDSU MAPA+2370290FP is a configuration-specific dual-channel single-mode attenuator cassette. Buyers should confirm the monitor-port implementation, connector types, fiber configuration, chassis compatibility, and included accessories before purchase.

A monitor tap and an internal in-line power monitor are different configurations. A tap provides a separate optical monitor path for an external power meter, while an internal in-line power monitor can measure and control output power within the attenuator system. The exact function of the offered cassette should be verified from its option code, front-panel connectors, system display, and test results.

Buyers should review the condition of all optical ports, both attenuation channels, monitor connections, shutter functions, chassis connector, calibration status, and service history. Only products specifically identified in the listing should be considered included.

Why Buy from AssetRelay?

AssetRelay supplies professional equipment and product solutions for fiber optic, telecom, laboratory, production, inspection, cleaning, RF/microwave, electronic test, and photonics applications. The JDSU MAPA+2370290FP is listed to help engineers, laboratory personnel, production facilities, procurement teams, and service organizations source dual-channel optical attenuation equipment for professional test systems.

Buyers should review the available product photographs, physical condition, connector types, monitor-port configuration, included accessories, calibration information, and MAP platform compatibility before purchase. Confirming these details helps ensure that the cassette matches the intended wavelength range, attenuation requirements, fiber type, connector polish, optical power level, and automated test workflow.

Only accessories specifically identified in the product listing should be considered included. The MAP chassis, optical power meters, FC/PC patch cables, laser sources, external monitoring equipment, software, and automation accessories may be required separately.