GIGALIGHT Launches Silicon-based 100G QSFP28 LR1 20km Transceiver

Shenzhen, China, January 4, 2022 – GIGALIGHT has announced to launch a single-lambda 100G optical transceiver module—100G QSFP28 LR1—adpoting a silicon-based modulator recently. This 100G Ethernet optical module is developed with 7nm DSP and silicon photonics chip. The three-temperature power consumption is less than 4 Watts. It can be used as a substitute for 100G QSFP28 LR4 in certain 100GE applications. The company simultaneously launched silicon-based 100G QSFP28 DR1 and 100G QSFP28 FR1 modules.

Figure 1: GIGALIGHT’s single-lambda 100G silicon photonics transceivers

The performance and characteristics of the 100G QSFP28 LR1 transceiver are as follows:

  • Compliant with QSFP28 MSA and IEEE 802.3cu 100GBASE-LR1
  • Up to 20km at 100GE data rate
  • Zero-frame-loss under 24-hour traffic test
  • Adopting the innovative COB technology of double-lens silicon photonics source to improve heat dissipation performance, coupling efficiency and manufacturability
  • Better signal quality adopting silicon integrated MZ modulation compared with the traditional EML version
Temperature (℃) Optical Power (dBm) TDECQ (dB) Outer ER (dB) Sensitivity (dBm) @ 2.4E-4 Power consumption (W)
0 1.14 1.51 4.96 -10.8 3.43
25 1.32 1.23 5.04 -10.93 3.54
70 1.12 1.41 5.07 -10.6 3.92

Table 1: Three-temperature performance

GIGALIGHT's 100G QSFP28 LR1 Eye diagram performance of 0℃

Figure 2: Eye diagram performance of 0℃

GIGALIGHT's 100G QSFP28 LR1 Eye diagram performance at 25℃ room temperature

Figure 3: Eye diagram performance at 25℃ (room temperature)

GIGALIGHT's 100G QSFP28 LR1 Eye diagram performance of 75℃

Figure 4: Eye diagram performance of 75℃

GIGALIGHT is a follower of silicon photonics technology products. In addition to traditional technology optical modules, the company has been committed to internal R&D and external cooperation in this area. With the maturity of the silicon photonics industry chain, GIGALIGHT believes that silicon photonics modules will eventually usher in a bright glow.