The QSFP28-161HG-02-R from 10Gtek Transceivers is a Fiber Optic Transceiver with Data Rate 100 Gb/s, Wavelength 1269 to 1332 nm (LWDM), Distance/Reach 2 km, Output Power -6.5 to 2.5 dBm, Receiver Sensitivity -10 to 2.5 dBm. More details for QSFP28-161HG-02-R can be seen below.