Optimization of One Dimensional Photonic Crystal Elliptical-Hole Low-Index Mode Nanobeam Cavities for On-Chip Sensing

Huang, Lijun; Zhou, Jian; Sun, Fubao; Fu, Zhongyuan; Tian, Huiping

doi:10.1109/jlt.2016.2575840

Cited by 42 publications

(11 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For a higher sensitivity, the optical resonance field requires to be confined in a small mode volume and interact strongly with the analytes. The S can be improved by the following methods: designing the air mode (AM) PCNC to localize the optical field in the air holes (circular [50,51], elliptical [52]); embedding a nano-slot into the dielectric mode (DM) PCNC and the light can be localized in the nano-slot [40,[53][54][55][56][57][58]. For example, Wang et al presented InGaAsP PhC slot nanobeam slow optical waveguides, which embedded InAs quantum dots [53].…”

Section: Efforts On Ultra-high Figure Of Merit (Fom) For Refractive Imentioning

confidence: 99%

Photonic Crystal Nanobeam Cavities for Nanoscale Optical Sensing: A Review

et al. 2020

View full text Add to dashboard Cite

The ability to detect nanoscale objects is particular crucial for a wide range of applications, such as environmental protection, early-stage disease diagnosis and drug discovery. Photonic crystal nanobeam cavity (PCNC) sensors have attracted great attention due to high-quality factors and small-mode volumes (Q/V) and good on-chip integrability with optical waveguides/circuits. In this review, we focus on nanoscale optical sensing based on PCNC sensors, including ultrahigh figure of merit (FOM) sensing, single nanoparticle trapping, label-free molecule detection and an integrated sensor array for multiplexed sensing. We believe that the PCNC sensors featuring ultracompact footprint, high monolithic integration capability, fast response and ultrahigh sensitivity sensing ability, etc., will provide a promising platform for further developing lab-on-a-chip devices for biosensing and other functionalities.Micromachines 2020, 11, 72 2 of 20 microcavities confine the light in a small volume, leading to significant enhancement of light-matter interaction, resulting in ultra-high sensitivity (S) and a low detection limit. When subject to slight environmental changes, the spectral properties change can be obtained, e.g., resonator wavelength shift [20][21][22] and mode broadening [23].The main types of optical microcavities include whispering gallery mode (WGM) cavities, Fabry-Perot (F-P) cavities and photonic crystal (PhC) cavities [24]. Among these, PhC cavities have been investigated as advantageous platforms due to their ultra-high Q/V enabling the enhancement of lightmatter interactions. Particularly, compared with two-dimensional (2D) PhC cavities, one-dimensional photonic crystal nanobeam cavities (1D-PCNCs) attract great attention for their ultra-sensitive optical sensing and lab-on-a-chip applications, owing to their ultra-compact size, ultra-small mode volume, high integrability with bus-waveguide and excellent complementary metal-oxide-semiconductor (CMOS) compatible properties [25][26][27][28][29][30][31][32][33].In this review, we will focus on nanoscale optical sensing based on 1D-PCNCs. The structure of the review is organized as follows. A comprehensive overview about basic properties and sensing mechanisms of 1D-PCNCs sensors is discussed in Section 2. In Section 3, firstly, we introduce the efforts to pursue ultra-high figure of merit (FOM) in refractive index (RI) sensing based on 1D-PCNCs. Secondly, we outline the applications of 1D-PCNC sensors on single nanoparticle and label-free molecule (viruses, proteins and DNAs) detection. Thirdly, a monolithic integrated 1D-PCNC sensor array for multiplexed sensing is introduced explicitly. In addition, we present other sensing applications of 1D-PCNC sensors such as temperature sensing and optomechanical sensing, etc. Next, we review the nanofabrication and coupling techniques in the development of 1D-PCNC sensors in Section 4. Finally, we draw a brief conclusion. Figure 2. (a) Schematic of photonic circuits. The green lines, red boxes and black boxes represe...

show abstract

Section: Efforts On Ultra-high Figure Of Merit (Fom) For Refractive Imentioning

confidence: 99%

Photonic Crystal Nanobeam Cavities for Nanoscale Optical Sensing: A Review

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Here, we present the performance results of the designed cavity for onelayer 3D simulations by using FDTD simulations for each rotational angle at the mode 2 , which gives the best results for prior analyses in table 1. It can be easily seen that, the light confines in a small volume as ( ⁄ ) 3 These results can be commented as small mode volumes by quoting references to cavity studies in the literature [6,13,[38][39][40]. However, the quality and Purcell factor values are not as higher as those of the 2D.…”

Section: Time Domain Analysismentioning

confidence: 90%

A reduced symmetric 2D photonic crystal cavity with wavelength tunability

Gümüş¹,

Tutgun²,

Yilmaz³

et al. 2019

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

In this paper, we propose a microcavity supported by a designed photonic crystal (PhC) structure that supplies both tunability of cavity modes and cavity's quality factor. Low symmetric defect region provides a trigger effect for the frequency shifting by means of rotational manipulation of small symmetry elements. Deviation of effective filling ratio as a result of rotational modification within the defect region results in the emanation of cavity modes at different frequencies. Here, we numerically demonstrate the frequency shifting for each obtained mode with respect to defect region architecture. In addition to wavelength tunability, quality factor, mode volume, and Purcell factors are analyzed for the slightly modified structures. Also, electric field distributions of each mode that emerge at distinct frequencies have been also studied at adjusted frequency modes which are observed for all rotational modification scenarios as = [0°, 15°, 30°, 45°]. After the investigations in 2D of silicon material (ɛ = 12), 3D simulations are performed and the collected data is used for the stacking approximation of 3D structures to get the 2D, thus the crosschecking of the quality factor that acquired from the 2D simulation can be executed by comparison with 3D. Limited 3D results are projected to approximate 2D ones step by step and get an exponential trend which reaches in the limit to the ~10 8 value for Ԛ-factor. Besides, 2D and 3D simulations of alumina (ɛ = 9.61) in terms of mode analysis and quality factor have been repeated considering the microwave experiments. Therefore, experimental analysis is compared with the numerical results and good agreement between the two is found.

show abstract

“…The air mode nanobeam cavity greatly increased the interaction between the optical field and the analytes; thus, the single nanobeam could realize a high sensitivity of 537.8 nm/RIU and a high Q factor of 5.16 × 10 6 , as indicated in their simulation results. Based on the similar sensing principle, Huang et al [ 75 ] also reported a tapered width nanobeam cavity with elliptical holes in 2016. Moreover, in 2015 Fegadolli et al [ 75 ] utilized the air-mode nanobeam cavity integrated with a NiCr microheater to demonstrate an RI sensor with a local heating function.…”

Section: Refractive Index Sensingmentioning

confidence: 99%

Applications of Photonic Crystal Nanobeam Cavities for Sensing

et al. 2018

View full text Add to dashboard Cite

In recent years, there has been growing interest in optical sensors based on microcavities due to their advantages of size reduction and enhanced sensing capability. In this paper, we aim to give a comprehensive review of the field of photonic crystal nanobeam cavity-based sensors. The sensing principles and development of applications, such as refractive index sensing, nanoparticle sensing, optomechanical sensing, and temperature sensing, are summarized and highlighted. From the studies reported, it is demonstrated that photonic crystal nanobeam cavities, which provide excellent light confinement capability, ultra-small size, flexible on-chip design, and easy integration, offer promising platforms for a range of sensing applications.

show abstract

Optimization of One Dimensional Photonic Crystal Elliptical-Hole Low-Index Mode Nanobeam Cavities for On-Chip Sensing

Cited by 42 publications

References 36 publications

Photonic Crystal Nanobeam Cavities for Nanoscale Optical Sensing: A Review

Photonic Crystal Nanobeam Cavities for Nanoscale Optical Sensing: A Review

A reduced symmetric 2D photonic crystal cavity with wavelength tunability

Applications of Photonic Crystal Nanobeam Cavities for Sensing

Contact Info

Product

Resources

About