Large-Scale and Broadband Silicon Nitride Optical Phased Arrays

Sun, Caiming; Li, Binghui; Shi, Wu; Lin, Jing; Ding, Ning; Tsang, Hon Ki; Zhang, Aidong

doi:10.1109/jstqe.2022.3182306

Cited by 27 publications

(11 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the number of cascaded-layer increases, the divergence angle could be further reduced, depending on the advancement of the lithium niobate poled process. Compared with other high-resolution OPA [31][32][33][34][35] , the present cascaded-PPLN OPA shows great superiority in terms of the number of phase tuning units.…”

Section: A Principle Of Cascaded-ppln Opa and Simulationmentioning

confidence: 96%

Cascaded periodically poled electro-optical crystal optical phased array

Li¹,

He²,

Zheng³

et al. 2023

Preprint

View full text Add to dashboard Cite

Section: A Principle Of Cascaded-ppln Opa and Simulationmentioning

confidence: 96%

Cascaded periodically poled electro-optical crystal optical phased array

Li¹,

He²,

Zheng³

et al. 2023

Preprint

View full text Add to dashboard Cite

“…, where 𝐸 𝑓𝑖𝑏𝑒𝑟 (𝑥, 𝑦) and 𝐸 𝑤𝑎𝑣𝑒𝑔𝑢𝑖𝑑𝑒 (𝑥, 𝑦) are the mode field distribution of fiber and waveguide separately [7], thus the theoretical coupling efficiency is calculated to be 0.0619 (-12.8dB) contributed by the mode field overlap, which is comparatively low than that of fiber chip coupling in the nearinfra wavelength [6,9,10]. For measuring the loss of designed waveguide of blue-green light phased array, the experimental setup in fig.…”

Section: Based On the Calculation Equation Of Coupling Efficiencymentioning

confidence: 99%

“…Practical implementations of the blue-green light phased array for above applications requires highefficiency coupling to ensure the OPA chip to get enough emitting energy [5]. The traditional fiberwaveguide couplers can be divided to two categories, grating couplers and edge couplers [6][7][8][9][10]. The alignment tolerance of grating couplers is large but the bandwidth is limited.…”

Section: Introductionmentioning

confidence: 99%

Enhanced coupling efficiency of optical fiber to green light waveguide by optical phased array

Liu

Sun

2023

Silicon Photonics XVIII

Self Cite

View full text Add to dashboard Cite

The coupling efficiency between optical fiber and blue-green light waveguide is pretty low since the limited size of sub-micrometer waveguides fabricated for the blue-green light waveguides, which largely limits the applications of photonic circuits at blue-green light wavelengths. Here we propose the mode field spot of wedge-shaped optical fiber lens is applied to couple the laser light into an optical phased array (OPA) by multiple waveguide channels. The numerical results show that compared to the optical coupling of green light waveguide by single-mode optical fiber, the coupling efficiency can be improved by 100% with 12 channels of OPA is coupled by a wedge-shaped optical fiber lens. This study may solve the coupling problems of blue-green light on photonic chips and have the great potential applications of photonic circuits at blue-green wavelengths.

show abstract

“…Ongoing research into silicon nitride OPAs aims to optimize performance aspects such as off-target "sidelobe" emission and increasing steering speed and resolution, paving the way for their application in biological imaging and sensing. 196,197…”

Section: Lensless On-chip Optics With Integrated Photonicsmentioning

confidence: 99%