Bandwidth Improvement for a Photonic Crystal Optical Y-splitter

Danaie, Mohammad; Kaatuzian, Hassan

doi:10.3807/josk.2011.15.3.283

Cited by 35 publications

(10 citation statements)

References 27 publications

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“…Comparison of the two spectra reveals an interesting feature; namely, that the signal is attenuated under the load condition, with the largest attenuation occurring around 700 nm by more than 3 dB. This loss is due to the fact that when the fiber is compressed by the object, the signal is not tightly confined resulting from the close adherence of the glass material in the pore band and experiences microbending losses [8][9][10]. This phenomenon may be exploited in making pressure sensors with this type of holey fibers [11][12][13][14][15].…”

Section: Experiments and Resultsmentioning

confidence: 98%

Discernibly Temperature-insensitive Pressure Sensitivity in Porous Random-Hole Optical Fibers

Kim¹,

Kominsky²,

Pickrell³

2013

Journal of the Optical Society of Korea

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Novel breakthrough random-hole optical fibers (RHOFs) are fabricated in a draw tower facility, by tapering an optical fiber preform packed with a silica powder mixture capable of producing air holes in situ at the high temperature of tens of hundreds in degrees Celsius. Structural and propagation characteristics of the porous RHOF are explained briefly. Experimental investigations of the invented RHOF are performed for pressure sensor applications. Remarkable results are obtained for the RHOF with desirable pressure sensitivity independent of temperature, as is required for harsh conditions as in oil reservoirs.

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Section: Experiments and Resultsmentioning

confidence: 98%

Discernibly Temperature-insensitive Pressure Sensitivity in Porous Random-Hole Optical Fibers

Kim¹,

Kominsky²,

Pickrell³

2013

Journal of the Optical Society of Korea

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“…The lattice constants of the structures are 430 nm and 645 nm for the hole-type and rod-type structures, respectively. The slab thickness of the triangular pattern is about 0.6a and the PhC is assumed to have air cladding [29,30]. For the rod-type structure, it is assumed that the rods are several times longer than the width of the input light beam so that a 2D approximation can be used.…”

Section: Numerical Discussionmentioning

confidence: 99%

Design of adjustable T-shaped and Y-shaped photonic crystal power splitters for TM and TE polarizations

Danaie¹,

Nasirifar²,

Dideban³

2017

Turk J Elec Eng & Comp Sci

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Abstract:In this paper, new topologies for realization of photonic crystal optical power splitters for TE and TM modes are proposed. The presented structures can be used for dividing input power with a desired ratio to output ports. The central input wavelength is designed for 1550 nm. To obtain wide-bandwidth power splitters for TE and TM modes, modified Y-shaped and T-shaped photonic crystal junctions are used. A triangular lattice of air holes and a square lattice of rods are used for Y-shaped and T-shaped platforms, respectively. For analyzing these structures, plane wave expansion and finite difference time domain methods are used. Simulation results show that the T-shaped splitter has a bandwidth equal to 51 nm, while the bandwidth of the Y-shaped structure is 126 nm. One of the advantages of the presented topologies is that the power share directed towards each output port can be determined by changing the radii of some specified rods and holes in their structures. For the designer to calculate the optimum radii of the holes based on his desired power ratio, some formulas are presented. Compared to the tunable power splitters based on directional couplers, this method provides much wider bandwidth and a more linear power ratio function.

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“…The radius of the holes in this structure is 0.3a. The slab thickness of triangular pattern is about 0.6a and the PhC is assumed to have an air cladding [20]. Finite Difference Time Domain (FDTD) method and Plane Wave Expansion (PWE) are used to analyze the structures.…”

Section: Methodsmentioning

confidence: 99%

“…This structure can be used in communication systems and has the ability to be integrated [19]. One photonic crystal structure for wide-band Y-splitter for TE modes with a triangular lattice of air holes etched in a GaAs slab also is presented in [20]. It has less complexity and about 100nm bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Design of a High-Bandwidth Y-Shaped Photonic Crystal Power Splitter for TE Modes

Danaie

Far

Dideban

2018

IJOP

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ABSTRACT-In this paper, a Y-shaped power splitter based on a two dimensional photonic crystal (PhC) for TE modes is designed and optimized. A triangular lattice of air holes is used for Y-shaped power divider. For analyzing these structures, plane wave expansion (PWE) and finite difference time domain (FDTD) methods are used. The simulation results show that more than 98% of the input power is transmitted to the outputs and the structure has just less than 2% reflected power. According to the simulation results this structure is suitable for high bandwidth optical integrated circuit at the 1550 nm wavelength.

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Bandwidth Improvement for a Photonic Crystal Optical Y-splitter

Cited by 35 publications

References 27 publications

Discernibly Temperature-insensitive Pressure Sensitivity in Porous Random-Hole Optical Fibers

Discernibly Temperature-insensitive Pressure Sensitivity in Porous Random-Hole Optical Fibers

Design of adjustable T-shaped and Y-shaped photonic crystal power splitters for TM and TE polarizations

Design of a High-Bandwidth Y-Shaped Photonic Crystal Power Splitter for TE Modes

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