Silicon MMI-based power splitter for multi-band operation at the 1.55 and 2 µm wave bands

Author:

Yi Qiyuan1,Cheng Guanglian,Yan Zhiwei,Li Qiyuan,Xu Fanglu,Zou Yongchao2,Li Ting1,Sun Yuhan1,Zou Yi1ORCID,Yu Yu,Shen LiORCID

Affiliation:

1. ShanghaiTech University

2. National University of Defense Technology

Abstract

Multimode interference (MMI)-based power splitters are fundamental building blocks for integrated photonic devices consisting of an interferometer structure. In order to forestall the ‘capacity crunch’ in optical communications, integrated devices capable of operating in multiple spectral bands (e.g., the conventional telecom window and the emerging 2 µm wave band) have been proposed and are attracting increasing interest. Here, we demonstrate for the first time, to the best of our knowledge, the realization of a dual-band MMI-based 3 dB power splitter operating at the 1.55 and 2 µm wave bands. The fabricated power splitter exhibits low excess losses of 0.21 dB and 0.32 dB with 1 dB bandwidths for 1500–1600 nm and 1979–2050 nm, respectively.

Funder

National Key Research and Development Program of China

National Natural Science Foundation of China

Key Research and Development Program of Hubei Province

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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