Air and dielectric bands photonic crystal microringresonator for refractive index sensing

Urbonas, Darius; Balčytis, Armandas; Vaškevičius, Konstantinas; Gabalis, Martynas; Petruškevičius, Raimondas

doi:10.1364/ol.41.003655

Cited by 39 publications

(18 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The highest PhCRR intrinsic Q-factor of ≈83,800 was found at the two-fold mode of a 20µm-diameter PhCRR. To the extent of our knowledge, this is the highest reported quality factor in either the dielectric or air bands of a fabricated PhCRR [17,18,24], confirming the validity of our particular design and fabrication methods. Quality Factor Slowdown Factor (n Group /n Phase ) Fig.…”

Section: )supporting

confidence: 73%

Slow light in mass-produced, dispersion-engineered photonic crystal ring resonators

McGarvey-Lechable¹,

Hamidfar²,

Patel³

et al. 2017

Opt. Express

View full text Add to dashboard Cite

We present experimental results of photonic crystal ring resonators (PhCRRs) fabricated on the CMOS-compatible, silicon-on-insulator platform via 193-nm deep-UV lithography. Our dispersion-engineering design approach is compared to experimental results, showing very good agreement between theory and measurements. Specifically, we report a mean photonic band-edge wavelength of 1546.2 ± 5.8 nm, a 0.2% variation from our targeted band-edge wavelength of 1550 nm. Methods for the direct calculation of the experimental, discrete dispersion relation and extraction of intrinsic quality factors for a highly-dispersive resonator are discussed. A maximum intrinsic quality factor of ≈83,800 is reported, substantiating our design method and indicating that high-throughput optical lithography is a viable candidate for PhCRR fabrication. Finally, through comparison of the mean intrinsic quality and slowdown factors of the PhCRRs and standard ring resonators, we present evidence of an increase in light-matter interaction strength with simultaneous preservation of microcavity lifetimes.

show abstract

Section: )supporting

confidence: 73%

Slow light in mass-produced, dispersion-engineered photonic crystal ring resonators

McGarvey-Lechable¹,

Hamidfar²,

Patel³

et al. 2017

Opt. Express

View full text Add to dashboard Cite

show abstract

“…1(c), which shows that the field enhancement in the air holes occurs near the Si-air-interface; hence, no additional sensitivity enhancement is experienced by analyte that fills the holes compared to analyte that only binds on the surface of the holes. The experimental results reported here are based on a PhCR with resonances near the dielectric band edge; it is expected that an even higher sensitivity may be obtained if a resonance near the air band edge is used [25,31].…”

Section: Experimental Demonstrations Of Label-free Biosensing Of Protmentioning

confidence: 99%

“…As a critical step toward molecular diagnostic applications, it is important that label-free biosensing experiments are shown on the PhCR platform. Moreover, previously demonstrated PhCR structures with shallow-etched holes or grating designs exhibit bulk detection sensitivities of <100nm/RIU [25,26], which are lower than those of conventional microring based sensors [1]. Therefore, in this paper, an optimized PhCR structure with stronger light-matter interaction is presented in order to demonstrate that PhCRs can achieve superior sensing performance over conventional microring resonators in both volumetric and surface sensing experiments.…”

Section: Introductionmentioning

confidence: 99%

“…Based on the aforementioned attributes, PhCRs are promising candidates for highly sensitive biosensors in future on-chip diagnostic devices. Although the application of PhCRs as bulk refractive index sensors has been studied experimentally [24,25] and theoretically [26,27] in a few different geometries, its surface sensing capabilities have yet to be demonstrated. As a critical step toward molecular diagnostic applications, it is important that label-free biosensing experiments are shown on the PhCR platform.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Photonic crystal microring resonator for label-free biosensing

Lo¹,

Hu²,

Gaur³

et al. 2017

Opt. Express

View full text Add to dashboard Cite

A label-free optical biosensor based on a one-dimensional photonic crystal microring resonator with enhanced light-matter interaction is demonstrated. More than a 2-fold improvement in volumetric and surface sensing sensitivity is achieved compared to conventional microring sensors. The experimental bulk detection sensitivity is ~248nm/RIU and label-free detection of DNA and proteins is reported at the nanomolar scale. With a minimum feature size greater than 100nm, the photonic crystal microring resonator biosensor can be fabricated with the same standard lithographic techniques used to mass fabricate conventional microring resonators.

show abstract

“…Such type of optical sensors has different structural properties and is made of a diverse combination of materials for sensing various objects such as gases, solutions and organic particles. For instance, a PC microring resonator [38], a PC nano slotted parallel cavity [39] and a PC nanobeam cavity [40] structures have already been introduced. The common properties of such sensors are performing refractive index based sensing and operating at the telecommunication wavelength of 1550 nm.…”

Section: Potential Fabrication Platform For Proposed Pc Based Sensormentioning

confidence: 99%

Mid-infrared T-shaped photonic crystal waveguide for optical refractive index sensing

Turduev

Giden

Babayigit

et al. 2017

Sensors and Actuators B: Chemical

View full text Add to dashboard Cite

In this paper, we propose and design a new type of an integrated optical sensor that performs sensing in a wide wavelength range corresponding to mid-infrared (mid-IR) spectrum. By engineering the structural parameters of square-lattice photonic crystal (PC) slab incorporated with a T-shaped air-slot, strong light confinement and interaction with the analytes are assured. Numerical analyses in the time and frequency domain are conducted to determine the structural parameters of the design. The direct interaction between the slot waveguide mode and the analyte infiltrated into the slot gives rise to highly sensitive refractive index sensors. The highest sensitivity of the proposed T-slotted PC sensor is 1040 nm/RIU within the range of analytes’ refractive indices n = 1.05-1.10, and the overall sensitivity corresponding to the higher refractive index range of n = 1.10-1.30 is around 500 nm/RIU. Moreover, for a realistic PC slab structure, we determined an average refractive index sensitivity of 530 nm/RIU within the range of n = 1.10-1.25 and an average sensitivity of 390 nm/RIU within the range of n = 1.00-1.30. Furthermore, we speculate on the possible approach for the fabrication and the optical characterization of the device. The assets of the device include being compact, having a feasible measurement and fabrication technique, and possessing label-free sensing characteristic. We expect that the presented work may lead to the further development of the mid-IR label-free biochemical sensor devices for detection of various materials and gases in the near future.Peer ReviewedPostprint (published version

show abstract

Air and dielectric bands photonic crystal microringresonator for refractive index sensing

Cited by 39 publications

References 26 publications

Slow light in mass-produced, dispersion-engineered photonic crystal ring resonators

Slow light in mass-produced, dispersion-engineered photonic crystal ring resonators

Photonic crystal microring resonator for label-free biosensing

Mid-infrared T-shaped photonic crystal waveguide for optical refractive index sensing

Contact Info

Product

Resources

About