Why Filtered 1625 nm Wavelength Is Used For Live Fiber Testing?

With the incredible advancements in new-age fiber optic technology and modern fiber network deployments, the testing methods have improved a lot. The OTDR testing methods have become an indispensable choice for developing, validating, maintaining, and troubleshooting fiber optic systems. OTDR, or an Optical Time Domain Reflectometer, is a modern instrument essential for measuring and developing a visual overview of a fiber optic cable route. The critical data obtained through the instrument can deliver vital information on the condition and performance of fibers. It also exhibits if there are any passive optical components in the cable path. It may be connectors, splices, splitters, and multiplexers. 

The essentiality of 1625 nm wavelength for testing

For more than a decade the transmission wavelengths were only limited to 850nm, 1310nm, and 1550nm. In the current scenario, it is evident that the fiber networks may not get tested at the wavelength of 1625 nm. Why? Because the temperature can create multiple problems at 1625nm compared to lower wavelengths. If you are associated with the field of optical fiber networks, it is essential to recognize the wavelength aspects. The temperature creates multiple problems at a wavelength of 1625 nm. It is less for lower wavelength values. Temperature-induced cable loss or TICL could be detected at a wavelength of 1625 nm. It is more than that of other wavelengths. It will generate more losses in the optical cable. The current connectors, splices, and components are not optimized for the 1625 nm wavelength signals. In the long run, the signal reflections and losses could appear at this wavelength of 1625 nm.

Fiber testing and its impacts

The bending impact in fiber testing is not something new. With the introduction of the 1550 nm wavelength, one could find something other than the 1310 nm transmission wavelength. Since then, the bending effect played a significant part. Research and testing programs have compared the 1550 nm splice losses with the 1310 nm splice loss. Reviewing the bending effects is critical to obtain accurate reports. Here are some critical bending impacts you must review and note. 

The role of OTDR

Currently, the fastest-growing segment of the fiber testing market is OTDR equipment. The OTDR equipment manufacturers have leveraged the benefits of the equipment piece. With the rapid and worldwide expansion of OTDR across all product categories, the essentiality is growing at a fast rate. For instance, 5G adoption is ushering opportunities and challenges. The impacts are related to fiber regulation, installation, manufacturing, etc. The top-notch industry-leading OTDR manufacturers can vouch for the requirements of OTDR safety, efficiency, and product quality. 

The OTDR transmits a light pulse based on the wavelength while the fiber link is operational. The typical wavelength is 1625 nm for single-mode fiber. The filtered 1625 nm or 1650 nm wavelengths could be vital for in-service maintenance and evaluation, eliminating the interference of live traffic wavelengths.

Shinho OTDR X-2100  is manufactured with patience and carefulness, following the national standards to combine the rich experience and modern technology, subject to stringent mechanical, electronic and optical testing and quality assurance; in the other way, the new design makes X-2100 more smart and compact and multi-purpose. Whether you want to detect link layer in the construction and installation of optical network or proceed efficient maintenance and trouble shooting, X-2100 can be your best assistant.

Testing and OTDR – Know the future.

With time, OTDR has succeeded in providing better functionality, accuracy, etc. It has also fetched resolution at a lower price. The impeccable impact and improvement in OTDR auto-test algorithms have reduced the hassles of technicians and increased operational acceptance.  

Without modern technology like OTDR testing, the advanced application of fiber optics may not yield feasible outcomes. The ability to inspect and review what is inside thousands of miles of optical fiber with a thickness less than a human hair has become straightforward. It has become a practical necessity with the 5G network data loads and smart city projects.