Symmetric Meandering Distributed Feedback Structures for Silicon Photonic Circuits

Chaudhry, Muhammad Rehan; Zakwan, Muhammad; Onbaşlı, Mehmet C.; Serpengüzel, Ali

doi:10.1109/jstqe.2019.2957442

Cited by 4 publications

(4 citation statements)

References 35 publications

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“…为了提高折射率灵敏度, 东南大学Wen等 [68] 将该结构用亚波长光栅代替, 获得了500 nm/RIU 的折射率灵敏度. 兰州大学Zhao 等 [69] 在图5(d) 的结构基础上加上1个环, 使得器件的Fano共振光谱具有周期性且独立可调, 获得的光谱最高消光比为29.20 dB. 土耳其科奇大学Chaudhry 等 [70] 采用5个相同的定向耦合器组成5个MRR, 通过改变定向耦合器的耦合长度, 获得的Fano线形消光比大于26 dB, 光谱分辨率为368 dB/nm.…”

Section: 多微环谐振腔产生Fano共振的方法unclassified

Progress of silicon photonic devices-based Fano resonance

Lu¹,

Zhu²,

Zeng³

et al. 2021

Acta Phys. Sin.

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The development of silicon photonics provides a method of implementing high reliability and high precision for new micro-nano optical functional devices and system-on-chips. The asymmetric Fano resonance phenomenon caused by the mutual coupling of optical resonant cavities is extensively studied. The spectrum of Fano resonance has an asymmetric and sharp slope near the resonance wavelength. The wavelength range for tuning the transmission from zero to one is much narrow in Fano lineshape, therefore improving the figure of merits of power consumption, sensing sensitivity, and extinction ratio. The mechanism can significantly improve silicon-based optical switches, detectors, sensors, and optical non-reciprocal all-optical signal processing. Therefore, the mechanism and method of generating the Fano resonance, the applications of silicon-based photonic technology, and the physical meaning of the Fano formula’s parameters are discussed in detail. It can be concluded that the primary condition for creating the Fano resonance is that the dual-cavity coupling is a weak coupling, and the detuning of resonance frequency of the two cavities partly determines Fano resonance lineshapes. Furthermore, the electromagnetically induced transparency is generated when the frequency detuning is zero. The methods of generating Fano resonance by using different types of devices in silicon photonics (besides the two-dimensional photonic crystals) and the corresponding evolutions of Fano resonance are introduced and categorized, including simple photonic crystal nanobeam, micro-ring resonator cavity without sacrificing the compact footprint, micro-ring resonator coupling with other structures (mainly double micro-ring resonators), adjustable Mach-Zehnder interferometer, and others such as slit waveguide and self-coupling waveguide. Then, we explain the all-optical signal processing based on the Fano resonance phenomenon, and also discuss the differences among the design concepts of Fano resonance in optimizing optical switches, modulators, optical sensing, and optical non-reciprocity. Finally, the future development direction is discussed from the perspective of improving Fano resonance parameters. The topology structure can improve the robustness of the Fano resonance spectrum; the bound states in continuous mode can increase the slope of Fano spectrum; the Fano resonance can expand the bandwidth of resonance spectrum by combining other material systems besides silicon photonics; the multi-mode Fano resonances can enhance the capability of the spectral multiplexing; the reverse design methods can improve the performance of the device. We believe that this review can provide an excellent reference for researchers who are studying the silicon photonic devices.

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Section: 多微环谐振腔产生Fano共振的方法unclassified

Progress of silicon photonic devices-based Fano resonance

Lu¹,

Zhu²,

Zeng³

et al. 2021

Acta Phys. Sin.

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“…P HOTONIC integrated circuits (PICs) leverage siliconon-insulator (SOI) as a key technological platform [1], which has been pioneered for over thirty years as an optical waveguide platform in data centers. This approach overcomes the limitations of electronic integrated circuits that have reached their maximum integration capacity [2], [3], positioning it as the most promising technology for designing high-density integrated chips [4], [5].…”

Section: Introductionmentioning

confidence: 99%

A Novel Mid-Infrared Transverse Magnetic Mode Pass Periodic Waveguide Polarizer With Low Reflections

Zafar,

Pereira

2024

IEEE Access

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We propose a transverse magnetic (TM) pass polarizer based on a periodic waveguide on a silicon-on-insulator platform. The design is implemented on a 500nm-thick silicon layer surrounded by SiO 2 . The polarizer operates in the mid-infrared wavelength range of 3.1 µm to 3.6 µm, a crucial band for chemical and biological sensing, as well as environmental monitoring. While there is extensive documentation on polarizers in the near-infrared (NIR), there is a significant scarcity of research reports on polarizers in the mid-infrared (MIR). This proposed polarizer demonstrates outstanding performance, characterized by ultra-low loss for the transmitted TM mode, minimal reflections of the undesired transverse electric (TE) mode, and exceptionally high loss for the transmitted TE mode. The TM insertion loss remains below 0.5dB over a wavelength range of 3.2 µm to 3.6 µm, as the TM mode operates in the subwavelength and low-loss radiation regimes. The transmitted TE power is remarkably small, falling below -30dB over a 300nm wavelength range. This is attributed to the TE mode operating in the high-loss radiation regime and the bad gap region of the dispersion diagram. Furthermore, the reflected power of the undesired TE mode is significantly reduced (below -20dB) by incorporating the periodic waveguide in a directional coupler setup. The footprint of the polarizer is compact, measuring just 30 µm × 7 µm.

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“…filtering process can be easily realized, and the PBG can also be reconfigured to obtain filters with different spectral characteristics. In some applications, dynamic tunable filters with ultra-narrow bandpass are highly desirable for potential applications in high-precision optical sensing [5], dense wavelength division multiplexing [6], and wavelengthmodulation spectroscopy [7]. On the other hand, quasiperiodic PCs have higher transmission efficiency, smaller band-width, and higher quality factor.…”

Section: Introductionmentioning

confidence: 99%

Tunable Dual- and Multi-Channel Filter Based on Cantor Photonic Crystals Embedded With Graphene

et al. 2023

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We theoretically investigate the tunable dual-and multi-channel filter in one-dimensional aperiodic photonic crystals (PCs) embedded with graphene. The dielectrics slabs arrayed alternately submit to the Cantor sequence rule and graphene sheets are local at the interfaces of dielectrics layers. Cantor PCs are fractal structures and support a series of discrete resonant channels in transmission spectra, viz. fractal states. Consequently, dual-and multi-filtering channels could be achieved in the compound systems. The central wavelength of each channel and its value of transmission could be modulating by the chemical potential of grapheme and the incident angle as well. It shows that the dual-channel amplitude of transmission can be varied by over 100% and the multiple channels could be switched on and off by the chemical potential of graphene. This study will be very helpful in designing tunable optical filters.

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Symmetric Meandering Distributed Feedback Structures for Silicon Photonic Circuits

Cited by 4 publications

References 35 publications

Progress of silicon photonic devices-based Fano resonance

Progress of silicon photonic devices-based Fano resonance

A Novel Mid-Infrared Transverse Magnetic Mode Pass Periodic Waveguide Polarizer With Low Reflections

Tunable Dual- and Multi-Channel Filter Based on Cantor Photonic Crystals Embedded With Graphene

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