All-fibre narrowband reflection gratings at 1500 nm

Kashyap, Raman; Armitage, J.R.; Wyatt, R.; Davey, Stephen; Williams, Doug

doi:10.1049/el:19900476

Cited by 111 publications

(26 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…If we approximate β 2 -β0 in Eq. (10) by 2β0 (β-β0) = 2406.β and perform the same procedure for the backward propagating mode we get Equations (16) govern the propagation of monochromatic waves through the fiber grating. Depending on the phase difference ó we observe the drop in the forward propagating mode which is accompanied by the concurrent transfer of the energy to the backward propagating one.…”

Section: Spatially Modulated Bragg Gratings 823mentioning

confidence: 99%

“…They can be simply used as narrow-band reflectors (see e.g. [10,11]). Another application concerns fiber grating semiconductor lasers [12] that allow multi-gigabit modulation with a low chirping due to the effects of the external cavity length (around 10-20 mm).…”

Section: Introductionmentioning

confidence: 99%

“…It is also possible to . produce fiber grating lasers either by splicing the reflection grating to an Er-doped fiber [10] or by writing the grating into other rare-earth-doped fibers [13,14]. Chirped Bragg gratings in optical fibers may provide a tool for dispersion compensation [15,16] or pulse compression [17].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Spatially Modulated Bragg Gratings

1999

View full text Add to dashboard Cite

A set of coupled mode differential equations which describe the light propagation in an optical fiber containing a photoinduced Bragg grating is derived. Reflection spectra based on numerical solution to these equations are presented when basic grating parameters are varied. In addition, the influence of these parameters on the maximum reflectivity and 3 dB bandwidth is examined. Finally, reflection spectra of the chirped grating and the grating with spatially modulated refractive index changes are discussed.

show abstract

Section: Spatially Modulated Bragg Gratings 823mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Spatially Modulated Bragg Gratings

1999

View full text Add to dashboard Cite

show abstract

“…4 Other optical add-drop multiplexer designs use evanescent coupling of light between a pair of fibres within a tapered region of a fused coupler. 5,6 These devices are difficult to manufacture, because they require uniform and reproducible fusion of two fibres over the length of the coupling region.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the power coupling of novel wavelength-selective couplers incorporating axially symmetric long-period fibre gratings

2011

View full text Add to dashboard Cite

How to cite this article:Kritzinger R, Meyer J, Burger J. Investigation of the power coupling of novel wavelength-selective couplers incorporating axially symmetric long-period fibre gratings. S Afr J Sci. 2011;107(5/6), Art. #400, 7 pages. doi:10.4102/sajs. v107i5/6.400 Evanescent-field coupling was studied experimentally in novel optical-fibre-based wavelengthselective couplers, using axially symmetric long-period fibre grating (LPFG) structures. The coupling characteristics of a wavelength-selective coupler at the resonant wavelength were investigated for different LPFG offset distances. It was shown that the wavelength-selective couplers effectively transferred light power at the LPFG resonant wavelength from one fibre to another. The performance of the couplers was consistent with simulations performed in MATLAB using coupled-mode theory.

show abstract

“…Optical multilayer structures, such as fiber Bragg gratings [1,2], multilayer thin-film filters [3], have been used as wavelength selective optical filters. The essential property of dielectric multilayer structure is the existence of photonic band gap that forbids propagation of a certain frequency range of light, where the structure acts as a filter in that frequency [4].…”

Section: Introductionmentioning

confidence: 99%

Photonic Bandgaps in Quasiperiodic Multilayer Structures Using Fourier Transform of the Refractive Index Profile

Golmohammadi

Rouhani²,

Abbasian³

et al. 2009

PIER B

View full text Add to dashboard Cite

Abstract-In this paper, photonic bandgaps (PBGs) of the quasiperiodic structures is calculated using the Fourier transform of the refractive index profile. Comparing the reflectivity and Fourier spectrum of multilayer structure refractive index, we find that a peak in the Fourier spectrum is equivalent to a sinusoidal term in the refractive index. The wavelength of the peak location in the Fourier spectrum is half the wavelength where a PBG is located. Using Fourier transform analysis of the refractive index of any multilayer structure, we can determine the location of the PBGs of that structure. Peaks in the Fourier spectrum can be used to design reflective band optical filters in optical communication systems. The filtering wavelengths are twice the peaks in the Fourier spectrum.

show abstract

All-fibre narrowband reflection gratings at 1500 nm

Cited by 111 publications

References 5 publications

Spatially Modulated Bragg Gratings

Spatially Modulated Bragg Gratings

Investigation of the power coupling of novel wavelength-selective couplers incorporating axially symmetric long-period fibre gratings

Photonic Bandgaps in Quasiperiodic Multilayer Structures Using Fourier Transform of the Refractive Index Profile

Contact Info

Product

Resources

About