Abstract

We propose and demonstrate a mode-division-multiplexed transmitter by employing a VCSEL-based 2-D matrix and a multi-plane light converter (MPLC). The triangular matrix light spots from VCSELs are designed with a 250- $\mu$ m pitch in both x- and y- directions for scalable and low-loss mode multiplexing. The VCSELs are directly modulated by co-packaged BiCMOS drivers on a silicon interposer, fabricated on a wafer level. The MPLC is utilized to form seven phase masks to convert the individual Gaussian beams to multiplex Hermite–Gaussian modes, which can be coupled into a multi-mode fiber. In the demonstration, we packaged ten 10-G class VCSELs with the drivers, and the form factor of the co-packaged optics is 10-mm × 10-mm. With the fan-out evaluation board, the sub-module is characterized for short and long transmissions by multiplexing the ten directly modulated outputs from VCSELs. The testing results indicate 200-Gb/s capacity over 100-m MMF with direct detection and 28-km few-mode fiber with coherent detection.

Detachable interface toward a low-loss reflow-compatible fiber coupling for co-packaged optics (CPO)

Yinchao Du, Feng Wang, Ziming Hong, Yuechun Shi, Xiangfei Chen, and Xuezhe Zheng
Opt. Express 31(2) 1318-1329 (2023)

High-efficiency interface between multi-mode and single-mode fibers

Oussama Korichi, Markus Hiekkamäki, and Robert Fickler
Opt. Lett. 48(4) 1000-1003 (2023)

Few-mode VCSEL chip for 100-Gb/s transmission over 100  m multimode fiber

Hsuan-Yun Kao, Yu-Chieh Chi, Cheng-Ting Tsai, Shan-Fong Leong, Chun-Yen Peng, Huai-Yung Wang, Jian Jang Huang, Jau-Ji Jou, Tien-Tsorng Shih, Hao-Chung Kuo, Wood-Hi Cheng, Chao-Hsin Wu, and Gong-Ru Lin
Photon. Res. 5(5) 507-515 (2017)

3D-printed facet-attached optical elements for connecting VCSEL and photodiodes to fiber arrays and multi-core fibers

Pascal Maier, Yilin Xu, Mareike Trappen, Matthias Lauermann, Alexandra Henniger-Ludwig, Hermann Kapim, Torben Kind, Philipp-Immanuel Dietrich, Achim Weber, Matthias Blaicher, Clemens Wurster, Sebastian Randel, Wolfgang Freude, and Christian Koos
Opt. Express 30(26) 46602-46625 (2022)

MPLC-based low-modal-crosstalk nine-mode-group demultiplexer for DSP-free IM/DD MDM transmission over MMF

Jian Cui, Yu Deng, Zhuo Liu, Bin Hao, Chao Wu, Daiwei Tan, Ming Jiang, Leimin Zhang, Zhangyuan Chen, Yongqi He, Juhao Li, and Qi Wan
Appl. Opt. 63(13) 3399-3405 (2024)