With the accelerated development of industries such as the Internet, cloud computing and big data, 100G products are becoming more and more widely used and demand is also increasing.
Especially on the customer side, the demand for 100G10km optical modules is rising sharply.
The dual-rate optical transceiver modules currently on the market that support 100GBASE-LR4 and OUT-4 standards mainly rely on EML lasers as their core components. However, the high power consumption and high cost of EML make it difficult to implement them on a large scale. Used in many occasions.
Although ordinary DML lasers have relative advantages in terms of power consumption and cost, the sharp deterioration of the chirp of ordinary DML lasers at high extinction ratios makes it difficult to meet the application of 100G carrier-grade dual-rate 10 kilometers. .
