The Etern 40G QSFP+ PSM4 supports link lengths of up to 2km (PSM IR4) or10km (PSM LR4) on G.652 Single-Mode Fiber (SMF). It enables high-bandwidth 40G optical links over 12-fiber parallel fiber terminated with MPO/MTP multifiber female connectors. It can also be used in a 4x10G mode for interoperability with 10GBASE-LR interfaces up to 2km or 10km.
The 4x10G connectivity is achieved using an external 12-fiber parallel to 2-fiber duplex breakout cable, which connects the 4x10G LR module to four 10GBASE-LR optical interfaces. Etern’s QSFP+ PSM LR4 is optimized to guarantee interoperability in 4x10G mode over the full specification range of 10GBASE-LR and the SFP-10/25G-LR-S (in 10G mode)
Product list
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| Part Number | Package | Data Rate | Wavelength | Reach | Transmitter | Receiver | TX output (dBm) | RX Sensitivity (dBm) | Power Consumption (W) | Interface | Case Temperature | Application |
| FLS40CP02S | QSFP+ | 40G | 1310nm | 2KM | DFB | PIN | 2.3~-7 | -12.6 | <3.5 | MPO-12/APC | 0℃~70℃ | 40G PSM4 |
| FLS40CP10S | QSFP+ | 40G | 1310nm | 10KM | DFB | PIN | 1~-7 | -12.6 | <3.5 | MPO-12/APC | 0℃~70℃ | 40G PSM4 |