LNOI-Based Photonic Integrated Spatial Mode Controller With Reflective Structure

Optical signal processing chips modulate optical signals in synchronously all-optical networks and have recently become a research hotspot. We demonstrated a photonic integrated spatial mode controller on z-cut thin-film lithium niobate on insulator (LNOI). The proposed spatial mode controller integ...

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Bibliographic Details
Published in:Journal of lightwave technology 2024-12, Vol.42 (23), p.8295-8301
Main Authors: Zhang, Yudan, Tu, Huilan, Wu, Yunfan, Li, Guojiong, Dai, Xiangyang, Zhang, Yuanhao, Tan, Su, Xia, Juan, Lu, Qiaoyin, Guo, Weihua
Format: Article
Language:English
Subjects:
Arrayed waveguide grating
Arrayed waveguide gratings
lithium niobate on insulator
optical arbitrary waveform generator
Optical interferometry
Optical modulation
Optical reflection
Optical refraction
Optical variables control
Optical waveguides
spatial mode controller
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Summary:Optical signal processing chips modulate optical signals in synchronously all-optical networks and have recently become a research hotspot. We demonstrated a photonic integrated spatial mode controller on z-cut thin-film lithium niobate on insulator (LNOI). The proposed spatial mode controller integrates a 100-channel arrayed waveguide grating (AWG), 21 electrically controlled phase and amplitude modulators, and a total reflector array. The fabricated integrated chip exhibited a narrow channel interval of about 50 pm. The measured response time of the amplitude modulator based on a Mach-Zehnder interferometer (MZI) is less than 0.2 μs with a typical voltage product V π L of 13 V*cm. The proposed spatial mode controller has proven waveform-shaping ability, thus offering a new platform for optical arbitrary waveform generators (OWAGs).
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2024.3431075