Parabolic Tapered Coupled Two Photonic Crystal Nanobeam Slot Cavities for High-FOM Biosensing

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

doi:10.1109/lpt.2016.2542347

Cited by 25 publications

(10 citation statements)

References 24 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

“…The radii of eight periodic air holes on both sides of cavity is tapered down from 0.23a to 0.22a and radii of additional smaller air holes is tapered down from 0.16a to 0.14a on both sides of hole forming cavity. The tapering in the radii of bigger air holes and additional smaller air holes is computed using the subsequent formula [13] r (i) = r cavity -(i / i max ) 2 x (r cavity -r outer ) (I) Where i represents index of periodic air holes and manually inserted air holes moving outwards in both directions. The i max represents number of holes that are tapered in either side of cavity which are 8 here.…”

Section: A Outline Of the Structurementioning

confidence: 99%

A 2-D Photonic Crystal Polyatomic Structure for Sensing of Different Bio-Analytes

Pateriya¹

2019

IJRASET

View full text Add to dashboard Cite

In this paper a two dimensional (2D) photonic crystal cavity (PCC) has been proposed for the sensing of bio-analytes. The 2D photonic crystal (PhC) has additional holes in between the holes of the central row which is to create a polyatomic structure. The additional holes are smaller in size compared to the other holes in the PhC. Parabolic tapering of the bigger and additional smaller holes in the central row has been done to create the cavity nature in the PhC. The quality factor of the structure is obtained to be ~3500. Further, to improve the quality factor of the cavity a slot has been introduced along the central row of holes. The quality factor improved to ~7200. The modified proposed PCC has been utilized for the sensing of bio-analytes such as cytop, blood plasma etc. It has been found that the sensing of the bio-analytes can be done very easily by the proposed modified sensor. The sensitivity of it has been found to be 250 nm/RIU. Therefore, the proposed modified PCC can be realized for the application of bio-analytes sensing.

show abstract

“…In addition to the work described above, some studies have indicated that the optical field in the low-index sensing region could also be enhanced with coupled optical resonators, such as a side-coupled nanobeam cavity, microring resonator, etc. [ 77 , 78 , 79 , 80 ]. Furthermore, research has been carried out to enhance the single nanobeam cavity design in order to achieve the ultra-small mode volume suitable for nanoscale RI sensing [ 81 , 82 , 83 , 84 ].…”

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

Parabolic Tapered Coupled Two Photonic Crystal Nanobeam Slot Cavities for High-FOM Biosensing

Cited by 25 publications

References 24 publications

Photonic Crystal Nanobeam Cavities for Nanoscale Optical Sensing: A Review

Photonic Crystal Nanobeam Cavities for Nanoscale Optical Sensing: A Review

A 2-D Photonic Crystal Polyatomic Structure for Sensing of Different Bio-Analytes

Applications of Photonic Crystal Nanobeam Cavities for Sensing

Contact Info

Product

Resources

About