Broadband Arbitrary Ratio Power Splitters Based on Directional Couplers With Subwavelength Structure

Zhao, Shenzhi; Liu, Weixi; Chen, Jingye; Ding, Zuoqin; Shi, Yaocheng

doi:10.1109/lpt.2021.3070464

Cited by 32 publications

(7 citation statements)

References 28 publications

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“…Compared to the traditional single-polarization OPA, the wavelength tuning efficiency was improved twice to In the other steering dimension, beam steering can be achieved by tuning the operating wavelength according to Equation (9). However, the beam steering range is usually ∼14 • , which is limited by the wavelength tuning range of the light source (~100 nm) and the bandwidth of the power splitters [78][79][80]. To solve this problem, researchers have proposed multi-line OPA.…”

Section: Pic-opamentioning

confidence: 99%

All-Solid-State Beam Steering via Integrated Optical Phased Array Technology

2022

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Light detection and ranging (LiDAR), combining traditional radar technology with modern laser technology, has much potential for applications in navigation, mapping, and so on. Benefiting from the superior performance, an all-solid-state beam steering realized by integrated optical phased array (OPA) is one of the key components in the LiDAR system. In this review, we first introduce the basic principle of OPA for beam steering. Then, we briefly review the detailed advances of different solutions such as micro-electromechanical system OPA, liquid crystal OPA, and metasurface OPA, where our main focus was on the recent progress of OPA in photonic integrated chips. Finally, we summarize the different solutions and discuss the challenges and perspectives of all-solid-state beam steering for LiDAR.

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Section: Pic-opamentioning

confidence: 99%

All-Solid-State Beam Steering via Integrated Optical Phased Array Technology

2022

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“…is a fundamental element in the on-chip optoelectronic circuits, which is desired to be compact, broadband, low loss, and fabrication friendly. Generally, there are three types of couplers including the directional coupler (DC), Y-splitters, and 1 × 2 multimode interferometer (MMI) structures [5][6][7][8][9]. Y-splitters are the most common one, but normally hold large optical loss.…”

Section: Introductionmentioning

confidence: 99%

Silicon nitride thermo-optic on-chip Mach–Zehnder interferometer at visible wavelengths

Wang,

Ji,

et al. 2024

Meas. Sci. Technol.

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On-chip Mach–Zehnder interferometer (MZI) is a fundamental component for many integrated systems. It holds great promise in photonic applications at visible wavelengths. This paper presents an on-chip silicon nitride thermo-optic MZI. It is capable of generating interference at a wide wavelength range in the visible spectrum, including 488 nm, 532 nm, and 633 nm. The optical transmission loss is reduced by optimizing the device architecture. This work provides new insights into the designing of integrated optics and demonstrates the potential applications of on-chip MZI in the field of visual measurement.

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“…So far, several structures have been researched and developed including the Y-junction and its cascaded, multi-mode interference (MMI), and directional coupler. [1][2][3][4][5][6][7][8][9][10] Among them, the nano-pixel power splitter is attractive because of its compact size and even output capability among the output channels. The nano-pixel structure achieves multiple functions by changing the arrangement of the pixel layout.…”

Section: Introductionmentioning

confidence: 99%

1 × 4 nano-pixel power splitter designed using an electric profile correlation coefficient monitor method

Xie,

Jiang,

Hamamoto

2024

Jpn. J. Appl. Phys.

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Power splitter is one of the fundamental elements in photonic integrated circuit. Among various power splitter structures, nano-pixel-based ones have attracted attention because of the flexible design capability. As there is no rigid design rule in nano-pixel layout, inverse design algorithms are employed to realize the target function. Machine-learning needs in general criteria during design process, and one typical criterial is the device excess loss. For the designing of 1×N power splitter, it is not sufficient in consideration of power valance among N output-ports. In this study, we propose an electric field profile evaluation method which evaluate the total field profile at the device facet in addition to the excess loss. We exploit the criteria including above method to design 1 × 4 power splitter. As a result, the simulated results show all four 0th order modes and the output power are 24.490%, 24.494% with excess loss of 0.1 dB..

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Broadband Arbitrary Ratio Power Splitters Based on Directional Couplers With Subwavelength Structure

Cited by 32 publications

References 28 publications

All-Solid-State Beam Steering via Integrated Optical Phased Array Technology

All-Solid-State Beam Steering via Integrated Optical Phased Array Technology

Silicon nitride thermo-optic on-chip Mach–Zehnder interferometer at visible wavelengths

1 × 4 nano-pixel power splitter designed using an electric profile correlation coefficient monitor method

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