Broadband and Low-Loss Silicon Photonic Directional Coupler for Signal Power Tapping on the 3 μm SOI Waveguide Platform

Lv, Dongsheng; Wu, Longsheng; Liu, Chenyang; Li, Ang; Wang, Ruxue; Wu, Aimin

doi:10.3390/photonics10070776

Cited by 5 publications

(3 citation statements)

References 32 publications

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“…In order to achieve broader operating bandwidths, the effective refractive index of the device could be modified. This can be achieved by increasing the waveguide height [37] or employing sub-wavelength waveguide structures [38].…”

Section: Discussionmentioning

confidence: 99%

Design of a Passive Silicon-on-Insulator-Based On-Chip Optical Circulating Network Supporting Mode Conversion and High Optical Isolation

Lin,

Chen,

Chow

et al. 2023

Photonics

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Over the past few decades, on-chip photonic integrated circuits based on silicon photonics (SiPh) platforms have gained widespread attention due to the fact that they offer many advantages, such as high bandwidth, low loss, compact size, low power consumption, and high integration with different photonic devices. The demand for high-speed and high-performance SiPh devices is driven by the significant increase in demand for Internet traffic. In photonic integrated circuits, controlling optical signals to make them circulate in a specific direction is a highly researched area of study. However, achieving a purely passive on-chip optical circulating network on a SiPh platform is very challenging. Therefore, we propose and demonstrate, through simulations, an on-chip optical circulator network on a silicon-on-insulator (SOI) platform. The proposed device can also support mode conversion. The proposed on-chip optical circulating network consists of two kinds of tailor-made multi-mode interferometer (MMI) structures and waveguide crossings. Through the optical power division and mode combination capabilities of the MMI, an optical circulating network supporting high optical isolation and mode conversion is achieved. The proposed optical circulating network has a loss of 1.5 dB at each output port, while maintaining a high isolation of 35 dB in the transmission window from 1530 nm to 1570 nm.

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Section: Discussionmentioning

confidence: 99%

Design of a Passive Silicon-on-Insulator-Based On-Chip Optical Circulating Network Supporting Mode Conversion and High Optical Isolation

Lin,

Chen,

Chow

et al. 2023

Photonics

View full text Add to dashboard Cite

show abstract

“…Extremely low values of insertion loss (−0.27 dB) are observed, as discussed in Ref. [95]. The exploration of different shapes for directional couplers, such as asymmetrical bent directional couplers [95,[97][98][99] or bridged silicon wires [97,100,101], enables the enhancement of component performance or the creation of polarization beam splitters.…”

Section: Directional Couplermentioning

confidence: 96%

“…[95]. The exploration of different shapes for directional couplers, such as asymmetrical bent directional couplers [95,[97][98][99] or bridged silicon wires [97,100,101], enables the enhancement of component performance or the creation of polarization beam splitters. To achieve tunability with temperature, coupling coefficients can be manipulated using alloy arrangements, transitioning between a crystalline and amorphous state as the temperature varies, making the system tunable [102].…”

Section: Directional Couplermentioning

confidence: 99%

Integrated Photonic Passive Building Blocks on Silicon-on-Insulator Platform

Amanti,

Andrini,

Armani

et al. 2024

Photonics

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Integrated photonics on Silicon-On-Insulator (SOI) substrates is a well developed research field that has already significantly impacted various fields, such as quantum computing, micro sensing devices, biosensing, and high-rate communications. Although quite complex circuits can be made with such technology, everything is based on a few ’building blocks’ which are then combined to form more complex circuits. This review article provides a detailed examination of the state of the art of integrated photonic building blocks focusing on passive elements, covering fundamental principles and design methodologies. Key components discussed include waveguides, fiber-to-chip couplers, edges and gratings, phase shifters, splitters and switches (including y-branch, MMI, and directional couplers), as well as subwavelength grating structures and ring resonators. Additionally, this review addresses challenges and future prospects in advancing integrated photonic circuits on SOI platforms, focusing on scalability, power efficiency, and fabrication issues. The objective of this review is to equip researchers and engineers in the field with a comprehensive understanding of the current landscape and future trajectories of integrated photonic components on SOI substrates with a 220 nm thick device layer of intrinsic silicon.

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Numerical Simulation of Waveguide Propagation Loss on Directly Bonded InP/Si Substrate

Zhao,

Agata,

Yada

et al. 2024

J. Electron. Mater.

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Broadband and Low-Loss Silicon Photonic Directional Coupler for Signal Power Tapping on the 3 μm SOI Waveguide Platform

Cited by 5 publications

References 32 publications

Design of a Passive Silicon-on-Insulator-Based On-Chip Optical Circulating Network Supporting Mode Conversion and High Optical Isolation

Design of a Passive Silicon-on-Insulator-Based On-Chip Optical Circulating Network Supporting Mode Conversion and High Optical Isolation

Integrated Photonic Passive Building Blocks on Silicon-on-Insulator Platform

Numerical Simulation of Waveguide Propagation Loss on Directly Bonded InP/Si Substrate

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