Broadband 1 × 3 Couplers With Variable Splitting Ratio Using Cascaded Step-Size MMI

Tian, Ye; Qiu, Jifang; Yu, Mingbin; Huang, Ziyun; Qiao, Yiting; Dong, Zhenli; Wu, Jian

doi:10.1109/jphot.2018.2832188

Cited by 17 publications

(7 citation statements)

References 16 publications

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“…Tian et al . demonstrated SOI-based couplers with variable splitting ratio in a 15 × 15 μm 2 device footprint with 60 nm bandwidth and 80% transmission efficiency 37 . Xu et al .…”

Section: Introductionmentioning

confidence: 99%

Deep Neural Network Inverse Design of Integrated Photonic Power Splitters

Tahersima

Kojima

Koike‐Akino

et al. 2019

Sci Rep

306

140

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Predicting physical response of an artificially structured material is of particular interest for scientific and engineering applications. Here we use deep learning to predict optical response of artificially engineered nanophotonic devices. In addition to predicting forward approximation of transmission response for any given topology, this approach allows us to inversely approximate designs for a targeted optical response. Our Deep Neural Network (DNN) could design compact (2.6 × 2.6 μm2) silicon-on-insulator (SOI)-based 1 × 2 power splitters with various target splitting ratios in a fraction of a second. This model is trained to minimize the reflection (to smaller than ~ −20 dB) while achieving maximum transmission efficiency above 90% and target splitting specifications. This approach paves the way for rapid design of integrated photonic components relying on complex nanostructures.

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“…Tian et al . demonstrated SOI-based couplers with variable splitting ratio in a 15 × 15 μm 2 device footprint with 60 nm bandwidth and 80% transmission efficiency 37 . Xu et al .…”

Section: Introductionmentioning

confidence: 99%

Deep Neural Network Inverse Design of Integrated Photonic Power Splitters

Tahersima

Kojima

Koike‐Akino

et al. 2019

Sci Rep

306

140

View full text Add to dashboard Cite

show abstract

“…Once light is injected into the nanopixel optical waveguide structure, the nano-pixels with different locations cause the light scattering, and the scattered light in the optical waveguide interfere with each other. 22,23) Then, the complex interference of the injected light through the nano-pixel region is affected by choosing the number and position of the nano-pixel arrangement.…”

Section: Concept Of Nano-pixel Space-mode Compressormentioning

confidence: 99%

Space-mode compressor by using nano-pixel

wang

Jiang

HAMAMOTO

2022

Jpn. J. Appl. Phys.

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Spatial-division-multiplexing (SDM), as a promising way to enhance the fiber transmission capacity of optical networks, has been widely researched, and still suffers from the problem of device size increasing along with the space-mode order increasing. In order to solve this problem, optical mode field compression method is needed, however, it is difficult to realize for traditional optical waveguide. To achieve highly dense photonic integrated circuit for the transmission of higher order space-mode, a space-mode compressor by using nano-pixel structure was proposed and investigated in this work. A supervised machine learning model using deep neural network was used to design and optimize space-mode compressor based on nano-pixel structure. As a simulated result, we achieved possible nano-pixel configurations for the purpose of mode-compression and there is more than 50% size compression for the 0th and 1st order modes, as well as 46% size compression for 2nd and 35% for 3rd order modes.

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“…Several power splitting technologies have been developed, such as adiabatic Y branches [3], directional couplers [4], and multimode interference (MMI) couplers [5]. Some special MMI couplers based on special design are proposed to realize the function of arbitrary power splitting ratio, such as surface relief holograms [6], angled structure [7], special butterfly geometrical structure [8], cascaded step-size structure [9], quick response (QR) code-like structure [10], and asymmetric interference structure [11]. Some of those techniques are wavelength sensitive and some are wavelength insensitive.…”

Section: Introductionmentioning

confidence: 99%

“…Some of those techniques are wavelength sensitive and some are wavelength insensitive. Some of those MMI components are sensitive to wavelength [6][7][8] while some are wavelength insensitive [9][10][11]. Arbitrary-ratio power splitters with wavelength insensitivity are appealing for…”

Section: Introductionmentioning

confidence: 99%

A Numerical Solution for Broadband PLC Splitter with Variable Splitting Ratio Based on Asymmetric Three Waveguide Structures

2019

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A numerical solution for the broadband planar-lightwave-circuit (PLC) splitter with a variable splitting ratio based on asymmetric three waveguides weighted by the Blackman weighting function is designed for passive optical network applications with wavelengths between 1.53 and 1.57 µm. The performance of the proposed splitter is verified using the beam propagation method (BPM). It was found that a polynomial function of the splitting ratios accompanying a geometrical shift can be derived from the proposed splitter. The splitting ratio can be changed from 50:50 to 90:10 with this geometrical shift. The excess loss, crosstalk, polarization dependent loss, and splitting ratio variations against wavelength of the proposed splitter with wavelengths between 1.53 and 1.57 µm are better than 0.139 dB, −22.75 dB, 0.006 dB, and 0.335%, respectively. Obviously, the proposed splitter with variable splitting ratio retains the advantages of the symmetric design, such as low excess loss, low crosstalk, polarization insensitivity, broadband, and wavelength insensitivity.

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Broadband 1 × 3 Couplers With Variable Splitting Ratio Using Cascaded Step-Size MMI

Cited by 17 publications

References 16 publications

Deep Neural Network Inverse Design of Integrated Photonic Power Splitters

Deep Neural Network Inverse Design of Integrated Photonic Power Splitters

Space-mode compressor by using nano-pixel

A Numerical Solution for Broadband PLC Splitter with Variable Splitting Ratio Based on Asymmetric Three Waveguide Structures

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