HTF HTQS-FIS2LR 50GBASE-LR QSFP28 PAM4 1310nm 10km Generic Compatible is a 50 Gbps transceiver module for optical communication applications compliant to IEEE802.3cd 50GBASE-LR. The module converts 2 inputs channels of 25Gbps electrical data to single PAM4 optical signals for 50Gbps optical transmission. Reversely on the receiver side, the module receives 50Gbps PAM4 optical signals and then converts them to electrical data for 2 output channels. The central wavelength of the optical channel is 1310nm defined in IEEE 802.3 cd. For SMF applications, the transceiver module has an operating range up to 10km SMF with nominal bit rate of 26.5625 G baud/s.
HTF HTQS-FIS2LR is designed with QSFP28 form factor, optical/electrical connection and I2C interface according to the SFF series standard.
Feature:
50GBASE-LR QSFP28 PAM4 1310nm 10km Generic Compatible
Hot-pluggable QSFP28 form factor
Supports 50GBASE-LR application (26.5625G baud/s PAM4)
25G DML-Based linear transmitter
25G PIN linear receivers
Power consumption < 3.5W
Commercial case temperature: 0°C to 70°C
Maximum 10km link distance on SMF with KP4 FEC
Diagnostic features through I2C interface per SFF 8636 standard
Providing real-time monitoring of Transmitted optical power Received optical power
Laser bias current Module temperature Supply Voltage
Industry-standard LC duplex connector
IEC 60825-1 Class 1/CDRH Class 1 laser eye safe
Compliance with Restriction on Hazardous Substances (RoHS)
OPTICAL CHARACTERISTICS
50GBASE-LR QSFP28 PAM4 1310nm 10km Generic Compatible
Parameter | Symbol | Min. | Typ. | Max. | Units | Ref. |
Transmitter | ||||||
Signaling speed per lane | 26.5625 | GBd/s | ||||
Data rate variation | -100 | +100 | ppm | |||
Modulation format | PAM4 | |||||
Lane center wavelength | WL | 1304.5 | 1317.5 | nm | ||
Side mode suppression ratio (SMSR) | SMSRmin | 30 | dB | |||
Average launch power | Pave | -4.5 | 4.2 | dBm | ||
Optical modulation amplitude | Poma | -1.5 | +4 | dBm | ||
Launch power in OMA minus TDECQ | -2.9 | dBm | ||||
Transmitter and dispersion eye closure for PAM4 | TDECQ | - | - | 3.2 | dB | 1 |
Average launch power of OFF transmitter, each lane | Poff | -16 | dBm | |||
Optical extinction ratio | ER | 3.5 | dB | |||
Transmitter reflectance | TXRef | -26 | dB | |||
Optical return loss tolerance | ORLT | 15.6 | dB | |||
Relative intensity noise | RIN | -132 | dB/Hz | |||
Receiver | ||||||
Signaling speed per lane | 26.5625 | GBd/s | ||||
Data rate variation | -100 | +100 | ppm | |||
Modulation format | PAM4 | |||||
Lane center wavelength | WL | 1304.5 | 1317.5 | nm | ||
Receiver sensitivity (OMAouter) | Sens | -8.4 | dBm | 1 | ||
Overload receiver power | Povl | 4.2 | dBm | 1 | ||
Receiver reflectance | RXref | -26 | dB | |||
Stressed sensitivity (OMA) | -6.4 | dBm | ||||
Conditions of stressed receiver sensitivity test: | ||||||
Stressed eye closure for PAM4 (SECQ) | 3.4 | dB | ||||
Links | ||||||
Power budget | 8.7 | dB | ||||
Operating distance | 10 | km | ||||
Discrete reflectance | ‐26 | dB |
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