The effect of silicon loss and fabrication tolerance on spectral properties of porous silicon Fabry-Perot cavities in sensing applications

Hasar, Uğur Cem; Özbek, İ. Yücel; Oral, Emin Argun; Karacalı, Tevhit; Efeoǧlu, Hasan

doi:10.1364/oe.20.022208

Cited by 27 publications

(11 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(3). The effects of redshift and blueshift of a resonance frequency of the analyzed MM slabs are analogous to those of porous silicon structures by adsorption of biological/ chemical molecules [28][29][30] and by the formation of silicon dioxide (silica) over the walls of pores in a porous silicon structure [53]. …”

Section: Cell Dimensions and Simulation Of S-parametersmentioning

confidence: 99%

See 1 more Smart Citation

Stepwise technique for accurate and unique retrieval of electromagnetic properties of bianisotropic metamaterials

et al. 2013

View full text Add to dashboard Cite

Metamaterials (MMs) are artificial materials that have received attention recently because their built-in features create collective electromagnetic effects that are otherwise impossible, such as negative refraction, and because of their exotic electromagnetic applications, namely, perfect lens and invisibility cloaks. Depending on wave propagation characteristics, MMs possessing normally weak magneto-electric coupling coefficients start to exhibit stronger bianisotropic effects. Therefore, accurate electromagnetic characterization of these MMs is important. In this study, we adapt a stepwise method based on the Nicolson-Ross-Weir technique for accurate and unique retrieval of electromagnetic properties of bianisotropic MM slabs. For this goal, we have derived explicit expressions for unique retrieval of electromagnetic properties of these slabs and compared these expressions with those in the literature in the retrieval process. From the comparison, we note that derived expressions are appropriate for unique determination of electromagnetic properties of bianisotropic MM slabs. In the performance analysis of the stepwise method for different measurement scenarios, we considered different bianisotropic MM cell configurations (split-ring and Omega-shaped resonators as well as the same resonators with wire strips) and extracted their electromagnetic properties when measured/simulated scattering parameters have some thermal noise. We note that for most of the frequencies, the stepwise method retrieves correct electromagnetic properties even when a relatively higher normally distributed noise with zero mean value and with standard deviations of 0.015 is present. In addition to the influence of thermal noise on performance of the stepwise method, we also analyzed the effect of both increasing length slab and the frequency band on retrieved electromagnetic properties of the analyzed various bianisotropic MM slabs.

show abstract

Section: Cell Dimensions and Simulation Of S-parametersmentioning

confidence: 99%

“…This effective medium approach is not unique to an analysis of MMs but also has been successfully applied to many research fields including porous silicon sensors [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Stepwise technique for accurate and unique retrieval of electromagnetic properties of bianisotropic metamaterials

et al. 2013

View full text Add to dashboard Cite

show abstract

“…The reflectance of resonance peak is about 24% and the full width at half maximum (FWHM) is 42 nm, where the quality factor ( Q = λ/Δλ) is 31.6. Compared to various other PS-based photonic configuration structures [ 11 , 14 , 16 , 17 , 19 ], the PS double Bragg mirror structure has a wider reflectivity stop band and a deeper resonance dip, which means that such a sensor gives a high distinguishablity. In Figure 3 b, the width of the high-reflectivity stop band is about 624 nm and the reflectance is about 96%, with a resonance peak at 1336.0 nm in the measured reflectance spectrum of the double Bragg mirrors following the (n L1 n H1 ) 10 (n L2 n H2 ) 10 sequence.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, there are transverse chemical etching and axial electrochemical etching in the process of electrochemical etching. The transverse chemical etching will destroy the homogeneity of the PS photonic crystal more during the PS layer formation when the process goes deeper [ 18 , 19 ]. Though the difference of the variation for both axial and transverse etching between alternative layers is not evident at first, with the increase of layers, the accumulated change will be large enough to affect the characteristics and spectral properties of PS photonic crystal.…”

Section: Introductionmentioning

confidence: 99%

Detection of Ammonia-Oxidizing Bacteria (AOB) Using a Porous Silicon Optical Biosensor Based on a Multilayered Double Bragg Mirror Structure

Zhang

Jia

2018

Sensors

View full text Add to dashboard Cite

We successfully demonstrate a porous silicon (PS) double Bragg mirror by electrochemical etching at room temperature as a deoxyribonucleic acid (DNA) label-free biosensor for detecting ammonia-oxidizing bacteria (AOB). Compared to various other one-dimension photonic crystal configurations of PS, the double Bragg mirror structure is quite easy to prepare and exhibits interesting optical properties. The width of high reflectivity stop band of the PS double Bragg mirror is about 761 nm with a sharp and deep resonance peak at 1328 nm in the reflectance spectrum, which gives a high sensitivity and distinguishability for sensing performance. The detection sensitivity of such a double Bragg mirror structure is illustrated through the investigation of AOB DNA hybridization in the PS pores. The redshifts of the reflectance spectra show a good linear relationship with both complete complementary and partial complementary DNA. The lowest detection limit for complete complementary DNA is 27.1 nM and the detection limit of the biosensor for partial complementary DNA is 35.0 nM, which provides the feasibility and effectiveness for the detection of AOB in a real environment. The PS double Bragg mirror structure is attractive for widespread biosensing applications and provides great potential for the development of optical applications.

show abstract

“…For the analysis of cascaded networks, either of the two transfer matrix forms, namely, ABCD [25][26][27] or wave cascading matrix (WCM) [18][19][20][28][29][30] can be employed. Because the WCM form is more useful for treating two-port calibration problems than the ABCD form, 28 in this paper, we will use the WCM form.…”

Section: B Propagation Constant Determinationmentioning

confidence: 99%

Determination of constitutive parameters of homogeneous metamaterial slabs by a novel calibration-independent method

et al. 2014

Self Cite

View full text Add to dashboard Cite

A calibration-independent line-line method for broadband and simultaneous constitutive parameters determination of homogeneous metamaterial (MM) slabs is proposed. It is shown that the sufficient condition for parameters retrieval by the proposed method is to measure uncalibrated (raw) complex scattering parameters of measurement cells (different air regions in free-space) which are completely and partially loaded by the two identical metamaterial slabs. The stability of derived equations for different measurement uncertainty cases is analyzed. We have validated the proposed method by using simulated scattering parameters of a MM slab with split-ring-resonators and then by comparing the extracted electromagnetic parameters with those of a general method used in the literature in the cases with and without a small offset in reference-plane positions (as well as other measurement errors). From this comparison, we note that while the general method does not eliminate those errors, the proposed method not only does not introduce the non-physical anti-resonance behavior but also removes the measurement errors arising from different mechanisms such as inaccurate reference-plane positions and mismatched connections.

show abstract

The effect of silicon loss and fabrication tolerance on spectral properties of porous silicon Fabry-Perot cavities in sensing applications

Cited by 27 publications

References 25 publications

Stepwise technique for accurate and unique retrieval of electromagnetic properties of bianisotropic metamaterials

Stepwise technique for accurate and unique retrieval of electromagnetic properties of bianisotropic metamaterials

Detection of Ammonia-Oxidizing Bacteria (AOB) Using a Porous Silicon Optical Biosensor Based on a Multilayered Double Bragg Mirror Structure

Determination of constitutive parameters of homogeneous metamaterial slabs by a novel calibration-independent method

Contact Info

Product

Resources

About