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The Singlemode Reference Coupler LC/APC – LC/APC from Softing IT Networks serves as a precise calibration and measurement aid for optical networks. It is specifically designed for use with singlemode fibres and connects two LC/APC connectors in a compact, robust housing. This reference coupler is typically used in network testing and diagnostics to verify the performance of fibre cables and optical components. The coupler provides a reproducible and reliable measurement basis required for calibrating network test equipment such as the WireXpert MP.

Applications

The coupler is intended for professional applications in the field of optical measurement technology, particularly in the installation, maintenance, and diagnosis of singlemode fibre cables. It is used in environments where high measurement accuracy and repeatability of results are required, for example, during the commissioning of telecommunications networks, testing of fibre cable connections, or calibration of network test equipment. Use in laboratory environments or field tests is common, where a stable reference for optical signal transmission is needed.

Functions and Features in Detail

The coupler connects two LC/APC connectors, where the APC designation (Angled Physical Contact) indicates a bevelled fibre end face that minimises reflections and thus improves signal quality. The connection is made via a singlemode fibre, designed for high bandwidth and long transmission distances. The coupler is supplied as a single unit (1 piece) and serves as a reference point to standardise measurement results of fibre cables and optical components. Its use as a reference enables precise measurement and documentation of deviations in signal transmission.

Technology Explained Simply

The singlemode fibre transmits light signals through a very narrow core, enabling high bandwidth and low attenuation. The LC connector is a compact, standardised connector widely used in the IT and telecommunications industry. The APC optics (Angled Physical Contact) ensure the fibre end face is bevelled, minimising reflections at the connection. This is especially important in high-performance applications where signal losses or interference must be minimised. The coupler functions as a stable, reproducible measurement point, serving as a reference during calibration of test equipment or evaluation of fibre cables.

Compatibility and Accessories

The coupler is specifically developed for use with the WireXpert MP network tester from Softing IT Networks. It is intended as an accessory component for this type of test equipment and is used for calibration and validation of measurement results. Use with other devices is theoretically possible, provided they support singlemode fibres and LC/APC connectors. The coupler is not compatible with other fibre types (such as multimode) or other connectors (such as SC or ST). Use with other devices requires separate verification of compatibility.

Mounting and Installation

Mounting is achieved by simply inserting the LC/APC connectors into the two ports of the coupler. The connection is mechanically stable and requires no additional tools or mounting aids. The coupler is suitable for use in laboratory environments as well as in the field. There are no special mounting instructions, as the connection is purely mechanical. The coupler is not intended for use in damp or dusty environments, unless used within a protected housing or suitable environment.

Operational Advantages

The coupler provides a reliable and reproducible measurement basis essential for calibrating network test equipment. Using a standardised reference allows measurement results to be compared across different tests and devices. The compactness and robustness of the coupler facilitate use in the field and laboratory environments. The use of APC optics minimises reflections and improves signal quality, which is particularly beneficial for sensitive measurements. The coupler is specifically designed for singlemode fibres, optimising bandwidth and range of the measurement.