Photonic crystal filter based on defect mode and waveguide mode symmetry matching

Zhang, Tong; Sun, Jing; Yang, Yaohui; Li, Zhixin

doi:10.1016/j.optcom.2018.07.039

Cited by 19 publications

(7 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These include optical filters [2][3][4][5][6], along with tunable ones [7][8][9][10][11][12], lasers [13], light-emitting diodes [14], active cavities [15], including optical field enhanced nonlinear absorption [16], optical sensors [17][18][19], fiber-optic sensors [20], humidity sensors [21], gas sensors [22][23][24][25], and photonic biosensors [26][27][28][29][30][31][32]. In addition, alternative designs to the 1DPhC-based optical filters are represented by the 2DPhC-based ones [33][34][35].…”

Section: Introductionmentioning

confidence: 99%

One-Dimensional Photonic Crystal with a Defect Layer Utilized as an Optical Filter in Narrow Linewidth LED-Based Sources

et al. 2023

View full text Add to dashboard Cite

A one-dimensional photonic crystal (1DPhC) with a defect layer is utilized as an optical filter in a simple realization of narrow linewidth LED-based sources. The 1DPhC comprising TiO2 and SiO2 layers is characterized by two narrow defect mode resonances within the 1DPhC band gap, or equivalently, by two peaks in the normal incidence transmittance spectrum at wavelengths of 625.4 nm and 697.7 nm, respectively. By combining the optical filter with LEDs, the optical sources are employed in interferometry experiments, and the defect mode resonances of a Lorentzian profile with linewidths of 1.72 nm and 1.29 nm, respectively, are resolved. In addition, a simple way to tune the resonances by changing the angle of incidence of light on the optical filter is demonstrated. All-dielectric optical filters based on 1DPhCs with a defect layer and combined with LEDs thus represent an effective alternative to standard coherent sources, with advantages including narrow spectral linewidths and variable output power, with an extension to tunable sources.

show abstract

Section: Introductionmentioning

confidence: 99%

One-Dimensional Photonic Crystal with a Defect Layer Utilized as an Optical Filter in Narrow Linewidth LED-Based Sources

et al. 2023

View full text Add to dashboard Cite

show abstract

“…However, the complex geometry of the PC models is challenging to simulate accurately and efficiently with the conventional FDTD method. That is why the boundary element method (BEM) 5 or hybrid methods relying on the geometric flexibility of the finite element methods (FEM) have been applied 6‐8 . The main drawback of the FEM‐based simulation is that in time domain it typically requires the inversion or factorization of a sparse matrix at each time step 9 …”

Section: Introductionmentioning

confidence: 99%

“…That is why the boundary element method (BEM) 5 or hybrid methods relying on the geometric flexibility of the finite element methods (FEM) have been applied. [6][7][8] The main drawback of the FEM-based simulation is that in time domain it typically requires the inversion or factorization of a sparse matrix at each time step. 9 The discrete exterior calculus (DEC) can be seen as a differential form based generalization of finite difference methods, including the FDTD.…”

Section: Introductionmentioning

confidence: 99%

Discrete exterior calculus for photonic crystal waveguides

Colomés¹,

Verdugo²,

Akkerman³

2022

Numerical Meth Engineering

View full text Add to dashboard Cite

The discrete exterior calculus (DEC) is very promising, though not yet widely used, discretization method for photonic crystal (PC) waveguides. It can be seen as a generalization of the finite difference time domain (FDTD) method.The DEC enables efficient time evolution by construction and fits well for nonhomogeneous computational domains and obstacles of curved surfaces. These properties are typically present in applications of PC waveguides that are constructed as periodic structures of inhomogeneities in a computational domain. We present a two-dimensional DEC discretization for PC waveguides and demonstrate it with a selection of numerical experiments typical in the application area. We also make a numerical comparison of the method with the FDTD method that is a mainstream method for simulating PC structures. Numerical results demonstrate the advantages of the DEC method.

show abstract

“…I NTEGRATED optical filters are among the most widely used components in photonic circuits. Many optical applications utilize interferometric devices such as Mach-Zehnder Interferometer (MZI) [1], [2], Ring Resonators (RRs) [3]- [7], Bragg or Arrayed Waveguide Gratings (AWGs) [8]- [10], contra-directional couplers [11], [12] and photonic crystal filters [13] for their filtering requirements.…”

Section: Introductionmentioning

confidence: 99%

Tunable Bandpass Filter With Serially Coupled Ring Resonators Assisted MZI

et al. 2021

View full text Add to dashboard Cite

We present the analytical modelling and experimental characterization of a new design of silicon nitride tunable bandpass filter based on serially coupled ring resonators assisted Mach-Zehnder interferometer (SR-MZI). SR-MZI filters provide an additional degree of freedom to independently control the bandwidth and shape of the passband as compared to previous ring-assisted MZI filters. It is possible to tune the bandwidth, shape and side-band rejection of the response by adjusting the coupling in the filters, providing a scope for fully reconfigurable performance. The fabrication of the filters is CMOS compatible and supports mass production. Preliminary results for thermal controllability are presented.

show abstract

Photonic crystal filter based on defect mode and waveguide mode symmetry matching

Cited by 19 publications

References 21 publications

One-Dimensional Photonic Crystal with a Defect Layer Utilized as an Optical Filter in Narrow Linewidth LED-Based Sources

One-Dimensional Photonic Crystal with a Defect Layer Utilized as an Optical Filter in Narrow Linewidth LED-Based Sources

Discrete exterior calculus for photonic crystal waveguides

Tunable Bandpass Filter With Serially Coupled Ring Resonators Assisted MZI

Contact Info

Product

Resources

About