Monolithic waveguide filters using printed photonic-bandgap materials

Kyriazidou, C.A.; Contopanagos, Harry; Alexopoulos, N.G.

doi:10.1109/22.903089

Cited by 63 publications

(25 citation statements)

References 13 publications

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“…type-housed in a parallel-plate waveguide. We note that this configuration is very different from those employed by Chang and Hsu [1] and Kyriazidou et al [7] for PBG structures inserted in waveguides.…”

Section: Introductionmentioning

confidence: 94%

Parallel‐plate waveguides with Kronig Penney morphology as photonic band‐gap filters

Gómez

Lakhtakia

Solano

et al. 2003

Micro & Optical Tech Letters

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Guided wave propagation in a parallel‐plate waveguide with Kronig–Penney morphology is analyzed. Modes in the photonic band‐gap (PBG) structure can be classified as either transverse electric or transverse magnetic with respect to the propagation direction. Above the modal cut‐off frequencies, band gaps exist where propagation is forbidden. The locations and the widths of the band gaps depend on modal order, waveguide height, and the permittivity contrast and relative volumetric proportion of the two materials constituting the unit cell of the PBG structure. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 38: 511–514, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11106

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Section: Introductionmentioning

confidence: 94%

Parallel‐plate waveguides with Kronig Penney morphology as photonic band‐gap filters

Gómez

Lakhtakia

Solano

et al. 2003

Micro & Optical Tech Letters

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show abstract

“…type-housed in a parallelplate waveguide. We note that this configuration is very different from those employed by Chang and Hsu [1] and Kyriazidou et al [7] for PBG structures inserted in waveguides.…”

Section: Introductionmentioning

confidence: 87%

Parallel‐plate waveguides with Kronig–Penney morphology as photonic band‐gap filters

Gómez

Lakhtakia

Solano

et al. 2002

Micro & Optical Tech Letters

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Spectral shadowing is a distortion of a downstream FBG spectrum that results from light having to pass twice through the upstream FBG. From Eq. (1), if the Bragg wavelength of the ath FBG (a Ͻ i) is slightly offset from the ith FBG, it appears that the spectrum of the ith FBG is shifted further in the direction of the actual Bragg wavelength. For example, if the Bragg wavelength of the distal FBG in a 50-FBG serial array is 1550 nm, the rest of the FBGs are aligned to the same wavelength, but have an offset from 1 pm to 300 pm. The Bragg wavelength shift of the distal FBG due to this effect is shown in Figure 2. It is found that the maximum wavelength detection error is 18 pm when the reflectivity of the distal FBG is 1% and the FWHM of FBGs is 0.1 nm.Multiple reflection [3] results if the light reflected from an FBG arrives in the detection-time window allotted to another downstream FBG, because of delays associated with multiple reflection paths. We consider only first-order crosstalk pulses, which are those that undogo a total of three reflections in the array and are the strongest stray pulses generated. The secondorder multiple reflections are reduced relative to the primary signal by the 4 th power of reflectivity, and so on for the higher-order reflections. The graphical representation of the first-order multiple reflection processes shown in Figure 3. Here, the optical paths leading to primary FBG signal and all the possible first-order crosstalk pulses for the 4 th and 5 th FBG in a serial FBG sensor array are shown. If we assume the reflected power from FBGs are balanced and the Bragg wavelength of FBGs (from 1 to i Ϫ 1) are aligned to the Bragg wavelength of ith FBG, the wavelength detection error of the ith FBG due to the multiple reflection crosstalk isFor example, if for the Bragg wavelength all FBGs are aligned to the same wavelength and the reflected power from them is balanced, the wavelength detection error of the distal FBG due to multiple reflection in a 50-FBG sensor array is shown in Figure 4. The wavelength detection error is 12 pm when the reflectivity of the distal FBG is 1% and the FWHM of FBGs are 0.1 nm. CONCLUSIONThe computer simulation results of the intrinsic crosstalk of a TDM FBG serial sensor array have been reported. The mathematical formula of the multiple reflections in this topology is derived.The maximum wavelength detection error is 18 pm and 12 pm for the spectral shadowing and multiple reflection effect, respectively, when the reflectivity of the distal FBG is 1%. ACKNOWLEDGMENTThe authors would like to acknowledge support from the Hong Kong CERG, research grant no. PolyU5109/99E, and the Hong Kong Polytechnic University, research grant no. G-YW54. PARALLEL-PLATE WAVEGUIDES WITH KRONIG-PENNEY MORPHOLOGY AS PHOTONIC BAND-GAP FILTERS

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“…The structure with this characteristic is called electromagnetic bandgap structures-EBG. Electromagnetic wave with some frequencies can not transmit, which seems like forming forbidden area [13][14][15][16].…”

Section: Theory Of Ebgmentioning

confidence: 99%

A Novel Bandpass Filter of Substrate Integrated Waveguide (Siw) Based on S-Shaped Ebg

Li¹,

Tong²,

Bao³

et al. 2013

PIER Letters

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Abstract-A novel S-shaped electromagnetic band gap (EBG) middling bandwidth bandpass filter based on substrate integrated waveguide (SIW) was proposed. The filter was designed based on the band-stop characteristics of EBG by etching different dimensional Sshaped on the surface of substrate integrated waveguide. The bandpass filter with a center frequency at 7.765 GHz and relative fractional bandwidth 7.31% shows good bandpass characteristics with frequency band between 7.38 ∼ 7.94 GHz, while the insertion loss is less than 1.6 dB and achieve middling bandwidth in SIW by EBG and has the advantage of bandpass, low insertion loss, compacted and good selectivity etc.. The good agreement between the measured results and the simulated results demonstrates that the design of this proposed filter is effective.

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Monolithic waveguide filters using printed photonic-bandgap materials

Cited by 63 publications

References 13 publications

Parallel‐plate waveguides with Kronig Penney morphology as photonic band‐gap filters

Parallel‐plate waveguides with Kronig Penney morphology as photonic band‐gap filters

Parallel‐plate waveguides with Kronig–Penney morphology as photonic band‐gap filters

A Novel Bandpass Filter of Substrate Integrated Waveguide (Siw) Based on S-Shaped Ebg

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