Widely tunable O-band lithium niobite/III-V transmitter

Author:

Han Ya1,Zhang Xian1,Ma Rui1,Xu Mengyue1ORCID,Tan Heyun1,Liu Jie1,Wang Ruijun1,Yu Siyuan1,Cai Xinlun1

Affiliation:

1. Sun Yat-sen University

Abstract

The ever-increasing traffic has been driving the demand for compact, high-speed, and low-power-consumption optical transmitters. Thin-film lithium niobite (TFLN) platforms have emerged as promising photonic integrated solutions for next-generation optical transmitters. In this study, we demonstrated the first widely tunable optical transmitter based on a butt-coupling a TFLN modulator with an electrically pumped tunable laser. The tunable laser exhibited a side-mode suppression ratio of > 60 dB, linewidth of 475 kHz, and wavelength-tuning range of over 40 nm. The TFLN modulator presented a voltage-length product of 2.9 V·cm and an electro-optic response of 1.5 dB roll-off at 50 GHz. The optical transmitter support data rate was as high as 160 Gb/s.

Funder

National Key Research and Development Program of China

National Natural Science Foundation of China

Opening funds from the State Key Laboratory of Optoelectronic Materials and Technologies of China, Sun Yat-sen University

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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