Three-dimensional broadband 90° optical hybrid with low crosstalk and phase error processed via femtosecond laser direct writing

IF 2.2 3区 物理与天体物理 Q2 OPTICS
Xiaolin Li , Zhen Cao , Zhenqi Niu , Shengshui Wang , Huan Chen , Zhigang Jiang , Jianda Shao , Chaoyang Wei
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引用次数: 0

Abstract

The 90°optical hybrid is a key component for decoding phase information, and its performance is limited by the crosstalk of crossed waveguide and bandwidth. We proposed an optical hybrid with a three-dimensional spiral structure, which can effectively avoid crosstalk and has only a 2.8° cross angle. The three-dimensional optical hybrid is successfully processed using femtosecond laser direct writing with beam shaping as well as precise machining attitude and speed control, which exhibits a phase error of less than 3° within a wavelength range of 625–725 nm. Its broadband stability and low occupied space are applicable to future integrated photonic devices.
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来源期刊
Optics Communications
Optics Communications 物理-光学
CiteScore
5.10
自引率
8.30%
发文量
681
审稿时长
38 days
期刊介绍: Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.
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