![]() The selection guide for some mostly used transceiver modules is summarized in the following tables. Which to Choose for a Specific Transceiver?Ĭonsidering the common features of the transceiver and the loopback, we should think about the connector type, polish type, and cable type when selecting a loopback for the transceiver. Its configuration varies since the fiber count is not always the same in different applications. As for the MTP/MPO loopback, it is mainly used for testing parallel optics, such as 40G and 100G transceivers. The LC and SC loopbacks are made with simplex fiber cable and common connectors it’s not difficult to understand their configurations. In testing fiber optic transceiver modules, the most commonly used are LC, SC and MTP/MPO loopback cables. LC LOOPBACK CABLE PATCHAccording to the optical connector type of the loopback, fiber loopback cables can be divided to LC, SC, FC, ST, MTP/MPO, E2000, etc. The patch cord is made by 2.0mm or 3.0mm PVC sheath simplex or duplex indoor cable and then is completed with SC. Based on the fiber type used, there is single-mode loopback and multimode loopback, available for different polishing types. This designing is more compact in size and stronger in use. Some vendors provide improved structure with a black enclosure to protect the optical cable. ![]() ![]() Generally, a fiber loopback is a simplex fiber optic cable terminated with two connectors on each end, forming a loop. ![]() The molded fiber optic loopbacks are available by SC and LC types, which are easy to use for fiber optic test purpose in the lab experiments or manufacturing environment.Before deciding which loopback cable to use, we should firstly know the structure and classification of fiber loopback cable. Loopback fiber core can be 9/125 single mode or 50/125 multimode, or 62.5/125 multimode.īesides the traditional fiber optic loopback, we also have the molded fiber optic loopbacks, which are with custom designed strain relief boot.By incorporating a rigid connector shell for fiber protection with an easy to use, ergonomic package, the molded fiber loopback is designed for durability and performance. Typically single mode SC type and LC type fiber optic loopbacks are blue color, typical multimode LC and SC type fiber loop backs are beige color, this also goes with the practice of fiber optic patch cables. Just like fiber optic patch cable assemblies, fiber optic loopbacks are classified by single mode type and multimode type. The two most commonly used fiber optic loopbacks are SC type and LC type, while there are also ST, FC, and MTRJ, FDDI etc types. fiber optic loop backs are used in fiber optic test applications. This loopback plug features a compact design, long thumb release, molded A and B channel markers, and a custom designed strain relief boot.The optical fiber cable is protected by a standard. ![]() Traditional fiber optic loopbacks can be regarded to be the two connectors on the same piece of simplex fiber optic patch cable put together, thus it forms a loop. The FiberXP™ LC Single Mode 9µm Loopbacks are used to provide test engineers with an effective way of testing the transmission capability and receiver sensitivity of optical network equipment. Range ≤ 0.2 dB ( - 40 to +80 degree centigrade)įiber Optic Loopback Cable Brief Introduction LC loopback cables can be 9/125 single mode, 50/125 multimode or 62.5/125 multimode fiber type. They can comply with the RJ-45 style interface with low insertion loss, low back reflection and high precision alignment. Fiber Optic Loopback Cable Specifications The LC fiber optic loopback cables support the test of transceivers featuring LC interface. ![]()
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