CMC-1550 Modal Content Analyser

The CMC-1550 Modal Content Analyser from Arden Photonics is an advanced measurement system designed specifically for the characterization of few-mode fibers and hollow-core fibers with complex internal structures. As specialty fiber technologies continue to evolve and support increasingly demanding applications, understanding how individual propagation modes behave within a fiber has become critical for both fiber development and manufacturing quality control. The CMC-1550 provides the detailed modal analysis required to gain this understanding and optimize fiber performance.

The system consists of two separate units: a launch unit and a receiver unit. Together, these units employ the Spatially and Spectrally Resolved Imaging (S²) technique to identify, characterize, and analyze the individual modes propagating within the fiber under test. This sophisticated approach enables users to investigate the behavior of each guided mode in detail, providing valuable information that is difficult or impossible to obtain using conventional test methods.

The CMC-1550 measures key modal characteristics such as modal intensity, modal phase, differential group delay (DGD), mode-dependent propagation loss, and mode-coupling effects. By examining these parameters, engineers and researchers can gain a comprehensive understanding of how energy propagates through the fiber and how different modes interact with one another.

A particular strength of the CMC-1550 is its ability to reconstruct the propagation mode profiles and phases of the guided modes within the fiber. This capability provides a visual and quantitative representation of modal behavior, helping users validate fiber designs, improve coupling efficiency, enhance manufacturing processes, and identify potential performance limitations before fibers are deployed in real-world applications.

The instrument also calculates the relative intensity of each higher-order mode compared to the most strongly excited mode, often expressed as Multipath Interference (MPI). In addition, it determines the Differential Group Delay associated with each propagation mode, providing critical information for applications where signal quality, bandwidth, and mode management play an important role.

Designed for specialty fibers with diameters up to 400 μm, the CMC-1550 enables researchers, engineers, and manufacturers to fully characterize the modal performance of advanced optical fibers. Its measurement capabilities support both development and production environments, helping organizations improve product quality, validate new fiber designs, and maximize production yields.

Key Features

• Measures the modal characteristics of individual modes in few-mode fibers and hollow-core fibers.
• Utilizes Spatially and Spectrally Resolved Imaging (S²) technology for detailed mode identification and characterization.
• Consists of a dedicated launch unit and receiver unit for comprehensive modal analysis.
• Supports measurement of specialty fibers up to 400 μm in diameter.
• Reconstructs propagation mode profiles and modal phase distributions for detailed visualization and analysis.
• Calculates the relative intensity of higher-order modes compared to the most excited propagation mode.
• Measures Multipath Interference (MPI) characteristics to assess modal performance.
• Determines Differential Group Delay (DGD) for each propagation mode, enabling comprehensive time-delay analysis.
• Estimates mode-dependent propagation losses, providing valuable insight into fiber transmission performance.
• Evaluates mode coupling effects and interactions between guided modes
• Includes a loop measurement mode that enables real-time measurement and monitoring capabilities.
• Provides a complete understanding of modal behavior within complex specialty fiber structures.

Applications

The CMC-1550 is ideally suited for the development and characterization of hollow-core fibers. These advanced fiber designs guide light through air or gas-filled structures and require detailed modal analysis to fully understand their transmission properties, coupling efficiency, and propagation behavior.

Few-mode fiber developers can use the system to evaluate individual propagation modes and assess how modal interactions influence overall fiber performance. The detailed information provided by the CMC-1550 supports design optimization and helps validate theoretical fiber models with experimental measurements.

Fiber manufacturers benefit from the system’s ability to verify production consistency and ensure that critical modal characteristics remain within specification. By monitoring mode content, DGD, and mode coupling effects, manufacturers can identify process variations early and improve overall production yield.

Research institutions and photonics laboratories can use the CMC-1550 to investigate advanced fiber structures, develop new specialty fiber technologies, and gain deeper insight into complex propagation mechanisms. The system's detailed modal reconstruction capabilities make it particularly valuable for next-generation optical communication and sensing research.

Additional applications include gas sensing technologies, laser delivery systems, industrial photonics, medical fiber development, and advanced communication systems where accurate control and understanding of modal behavior are essential for performance optimization.

Why buy from AMS Technologies?

• Expert product selection and technical support
• Proven components from qualified suppliers
• Reliable European service and supply
• Custom engineering when standard products are not enough
• One partner from component to complete solution

What's next

As specialty fiber technologies become increasingly important for communication, sensing, medical, industrial, and scientific applications, the ability to accurately characterize modal behavior is becoming a key requirement for successful product development and manufacturing. The CMC-1550 Modal Content Analyser provides the advanced measurement capabilities necessary to understand, optimize, and validate these complex fiber structures.

By combining Spatially and Spectrally Resolved Imaging technology with detailed modal reconstruction, DGD analysis, MPI calculations, and real-time measurement capabilities, the CMC-1550 delivers a comprehensive solution for few-mode and hollow-core fiber characterization. Whether used in research laboratories or production facilities, the system helps organizations improve fiber performance, increase manufacturing consistency, and accelerate the development of next-generation specialty fiber technologies.