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

Figure 2: Eye diagram performance of 0℃

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

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.