For 5G deployments, we have searched quite many 50G transceivers. Finally we decided with FS. The PAM4 modulation is an advantage compared with the traditional NRZ method. Moreover, its transmission distance is favored by us. It supports an amazing reaching of more than 35km. We should give it five stars.

Everything goes well with these transceivers. They run stably and no error occurs. I have also got their test report. Detailed information is available. They are exactly trustworthy and good-quality products.