In fiber optical communication, SR LR LRM ER and ZR mean different transmission distance for 10g SFP+ transceiver modules. SR for short range, LR for long range, LRM for long reach multimode, ER for extended range and ZR for ze best range.
Direct Attach Cables with copper are widely used to connect two fixed transceiver modules, switches, servers, and storage inside racks, while Active Optical Cables are mostly used to link switches, servers, and storage between different racks inside data centers.
The smaller-than-your-fingernail DFB, EML laser chips are some of the most complex devices ever manufactured, which involves hundreds of steps, taking up to 4 months in process of production.
The SFP28 transceiver modules offer a transmission rate of 25Gbps at 850nm 100m and supports running on the same 1G/10G network cabling Infrastructure, increasing at least 2.5 times in speed, and the built-in DDM/DOM functions monitoring the real-time operation.
