HSFP28-1351 is SFP28 ER module for duplex optical data communications support 25.78 Gb/s 40Km data links. The transmitter section uses a high performance 1310nm EML and the receiver is an Avalanche Photodiode (APD) mounted in an optical header and a limiting post-amplifier IC.
HSFP28-3831 is SFP28 module, which is designed for use in 25Gb/s data rate over multimode fiber. It is with the SFP+ 20-pin connector to allow hot plug capability. Digital diagnostic functions are available via an I2C. It has built-in dual clock and data recovery (CDR).
25GbE
CPRI
Other Optical Links
HSFP28-2321 is SFP28 module for duplex optical data communications support 25.78 Gb/s and 28.05 Gb/s data links. It is with the SFP+ 20-pin connector to allow hot plug capability. Digital diagnostic functions are available via an I2C. It has built-in dual clock and data recovery (CDR).