We report a 2-CH EML array and its assembling technique for the next-generation IM-DD system. In this paper, we fabricate an arrayed EML consisting of BH DFB-LDs and high-mesa EA modulators in a single chip. We obtained a 3-dB bandwidth above 67 GHz (bandwidth is higher but could not be measured due to equipment limit), low inter-channel crosstalk below -20 dB, and an excellent eye quality at 112 GBaud PAM4/PAM6/PAM8.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

M. Shirao, S. Okuda, A. Uchiyama, T. Fujita, and N. Ohata, "112 GBaud PAM-8 operation of 2-ch EML array on high-performance sub-mount," Proc. SPIE 12894, Next-Generation Optical Communication: Components, Sub-Systems, and Systems XIII, 1289404 (Presented at SPIE OPTO: January 29, 2024; Published: 8 March 2024); https://doi.org/10.1117/12.2690921.