This product is a 100Gb/s transceiver module designed for optical communication applications compliant to QSFP28 4WDM 40km MSA/100GBASE-ER4 Lite/OTU4 standard. The module converts 4 input channels of 27.95Gb/s electrical data to 4 channels of LAN WDM optical signals and then multiplexes them into a single channel for 111.8Gb/s optical transmission. .Reversely on the receiver side, the module de-multiplexes a 111.8Gb/s optical input into 4 channels of LAN WDM optical signals and then converts them to 4 output channels of electrical data.
The central wavelengths of the 4 LAN WDM channels are 1295.56,1300.05,1304.58 and 1309.14 nm as members of the LAN WDM wavelength grid defined in IEEE 802.3ba. The high performance cooled LAN WDM DFB transmitters and high sensitivity APD receivers provide superior performance for 100Gigabit Ethernet applications up to 30km links without FEC and up to 40km links with FEC interconnections.
The product is designed with form factor, optical/electrical connection and digital diagnostic interface according to the QSFP+ Multi-Source Agreement (MSA). It has been designed to meet the harshest external operating conditions including temperature, humidity and EMI interference.
| Pin | Logic | Symbol | Name/Description | Ref. |
| 1 | GND | Module Ground | 1 | |
| 2 | CML-I | Tx2- | Transmitter inverted data input | |
| 3 | CML-I | Tx2+ | Transmitter non-inverted data input | |
| 4 | GND | Module Ground | 1 | |
| 5 | CML-I | Tx4- | Transmitter inverted data input | |
| 6 | CML-I | Tx4+ | Transmitter non-inverted data input | |
| 7 | GND | Module Ground | 1 | |
| 8 | LVTTL-I | MODSEIL | Module Select | 2 |
| 9 | LVTTL-I | ResetL | Module Reset | 2 |
| 10 | VCCRx | +3.3v Receiver Power Supply | ||
| 11 | LVCMOS-I | SCL | 2-wire Serial interface clock | 2 |
| 12 | LVCMOS-I/O | SDA | 2-wire Serial interface data | 2 |
| 13 | GND | Module Ground | 1 | |
| 14 | CML-O | RX3+ | Receiver non-inverted data output | |
| 15 | CML-O | RX3- | Receiver inverted data output | |
| 16 | GND | Module Ground | 1 | |
| 17 | CML-O | RX1+ | Receiver non-inverted data output | |
| 18 | CML-O | RX1- | Receiver inverted data output | |
| 19 | GND | Module Ground | 1 | |
| 20 | GND | Module Ground | 1 | |
| 21 | CML-O | RX2- | Receiver inverted data output | |
| 22 | CML-O | RX2+ | Receiver non-inverted data output | |
| 23 | GND | Module Ground | 1 | |
| 24 | CML-O | RX4- | Receiver inverted data output | |
| 25 | CML-O | RX4+ | Receiver non-inverted data output | |
| 26 | GND | Module Ground | 1 | |
| 27 | LVTTL-O | ModPrsL | Module Present, internal pulled down to GND | |
| 28 | LVTTL-O | IntL | Interrupt output, should be pulled up on host board | 2 |
| 29 | VCCTx | +3.3v Transmitter Power Supply | ||
| 30 | VCC1 | +3.3v Power Supply | ||
| 31 | LVTTL-I | LPMode | Low Power Mode | 2 |
| 32 | GND | Module Ground | 1 | |
| 33 | CML-I | Tx3+ | Transmitter non-inverted data input | |
| 34 | CML-I | Tx3- | Transmitter inverted data input | |
| 35 | GND | Module Ground | 1 | |
| 36 | CML-I | Tx1+ | Transmitter non-inverted data input | |
| 37 | CML-I | Tx1- | Transmitter inverted data input | |
| 38 | GND | Module Ground | 1 |
| Part Number | Product Description |
| SFP-GQS-SPO111-ES4C | QSFP28ER4 Lite 30km w/o FEC/40km with FEC, default datarate 100GE |
| SFP-GQS-SPO111-ES4CA | QSFP28ER4 Lite 30km w/o FEC/40km with FEC, default datarate OTU4 |
