JDS Uniphase RM3750 user manual Measuring Backreflection for Single-mode except 980 nm

Page 24

RM3 SERIES BACKREFLECTION METER

USER’S MANUAL

need to be made just before the high-attenuation bends in order to offset the small amount of reflection caused by the high-attenuation bends.

1.Using the size of rod specified in the Inspection Report (see the Customized Features and Test Data section), wind the cable around the rod until the reading displayed on the RM meter no longer changes (approximately six turns). The diameter of the rod must be suitable for the type of fiber connected to the output port jumper and for the wavelength in use. To minimize any memory of the bends in the cable jacket, do not pull on the cable while winding, and occasionally wind the cable in the opposite direction (figure 5a).

Figure 5a: Terminating the Jumper for BR Measurement for Single-mode (except 980nm)

2. The second termination is made after the DUT in order to obtain Brtot (figure 6a).

Figure 6a: Measuring Backreflection for Single-mode (except 980 nm)

Termination Techniques for Single-mode (980 nm) and Multimode Fiber

Termination is performed by using index-matching gel.

1.Apply index-matching gel directly to the fiber end (figure 5b).

2.After measuring BR0, clean the connector end in accordance with the Cleaning Connectors section.

10112341 Rev 002

Page 24 of 39

Page 23 Page 25
Image 24
Page 23 Page 25
Contents RM3 Series Backreflection Meter User’s ManualContents Customized Features and Test Data Programming GuideSafety Information, Instructions, and Symbols Safety InformationClass Laser Product Safety Instructions Before Initializing and Operating the UnitOperating the Unit RM3 Series Backreflection Meter USER’S Manual Safety Symbols SymbolProceeding Compliance CE ComplianceFDA-CDRH Compliance CSA / IEC Compliance RM3 Series Backreflection Meter USER’S Manual General Information and Specifications General InformationLoss and Power Measurements Backreflection MeasurementsKey Features Output PortInternal Light Sources Hybrid JumpersStandard Accessories Optional AccessoriesApplications Specifications Parameter Specification Single-mode MultimodeFlexcor is a trademark of CorningR Electrical PhysicalEnvironmental Getting Started Before Initializing and Operating the UnitInitial Inspection Operating Environment Storing and ShippingCleaning Connectors Powering Up the Meter Connector Cleaning connector type can varyOperating and Maintenance Instructions Front PanelKey/LED Description Rear Panel Termination TechniquesComponent Function Termination Techniques for Single-mode Fiber except 980 nmMeasuring Backreflection for Single-mode except 980 nm Setting Up the Meter for Backreflection Measurements Backreflection MeasurementsMeasuring Backreflection Loss and Power Measurements Setting Up the Meter for Loss and Power MeasurementsBackreflection Accuracy and Range Measuring Power Loss and Power MeasurementsMeasuring Relative Power Insertion Loss Measuring Absolute PowerData Logging Using the Foot Pedal Messages and SymbolsPower Accuracy Display DescriptionCalibrating the Meter StabilizingBackreflection Calibration Adjustment Power Calibration AdjustmentCleaning the Unit Cleaning the Connector EndsMaintaining the Meter Recharging the Battery Replacement of Internal FusesTroubleshooting Front Panel Connectors Long Cables for single mode model only, except 980 nm modelLoss Before the DUT Reflections Before the DUTOther Display Problem Solution Laser StabilityCalibration Up the Meter for BackreflectionRS232 Interface Specifications Name Symbol Pin Number Signal DirectionProgramming Guide RS232 Serial InterfaceCommand Action Left Dip Switch Switch Setting MeaningRight Dip Switch RS232-GPIB ConverterProgramming Examples RS232 Interface Program ExampleCustomized Features and Test Data

RM3750 specifications

The JDS Uniphase RM3750 is a cutting-edge optical spectrum analyzer that has garnered attention in various telecommunications and photonics applications. Renowned for its versatility and accuracy, the RM3750 combines advanced technologies to provide users with unprecedented measurement capabilities, making it an essential tool for researchers and engineers working in fiber optics, laser development, and spectral analysis.

One of the standout features of the RM3750 is its wide dynamic range. This feature allows users to obtain precise measurements across a broad spectrum of optical signals, which is crucial in environments where signal strength can vary significantly. The analyzer is designed to handle both high-intensity signals and weak optical events, ensuring that no detail is missed during analysis.

The RM3750 incorporates a high-resolution detection mechanism that enables it to distinguish closely spaced wavelengths. This characteristic is particularly beneficial in applications where wavelength spacing is minimal, such as in dense wavelength division multiplexing (DWDM) systems. The high resolution also allows for accurate characterization of spectral features, including signal peaks and noise.

In addition to its impressive measurement capabilities, the RM3750 supports advanced analysis and real-time monitoring. Users can visualize spectral data through an intuitive graphical interface, which aids in the quick interpretation of results. The instrument is equipped with real-time data processing capabilities, allowing users to observe changes in optical signals as they occur, a critical feature for dynamic environments like live signal monitoring.

The JDS Uniphase RM3750 is not only about hardware; it also comes with an array of software tools designed to enhance functionality and ease of use. These tools allow for automated measurements, data logging, and integration with other laboratory instruments. Moreover, the ability to export data in various formats facilitates easy sharing and analysis across platforms.

Another notable characteristic of the RM3750 is its compact design and robust build quality. This ensures that it can operate effectively in demanding laboratory conditions while being portable enough for field applications.

In conclusion, the JDS Uniphase RM3750 optical spectrum analyzer stands out for its combinations of wide dynamic range, high resolution, real-time monitoring, and user-friendly software integration. These characteristics make it an exceptional tool for professionals in telecommunications and optical research, enabling them to conduct more accurate and insightful measurements.
Top Page Image Contents