Polarization beam splitter based on photonic crystal fibers

Wen, Ke; Wang, Rong; Wang, Jing‐Yuan; Li, Jianhua

doi:10.1007/s12200-008-0061-x

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…Dual-core fibres in general are often being exploited as all-optical switches. Due to inherent birefringence of the dual-core structure and consequently polarization dependent coupling length, DC PCFs might be utilized as polarization beam splitters [14,15]. In the nonlinear regime, DC PCFs are often investigated as nonlinear fibre couplers.…”

Section: Introductionmentioning

confidence: 99%

Soliton-based ultrafast multi-wavelength nonlinear switching in dual-core photonic crystal fibre

et al. 2014

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Systematic experimental study of ultrafast multi-wavelength all-optical switching performance in a dual-core photonic crystal fibre is presented. The focus is on nonlinearly induced switching between the two output ports at non-excitation wavelengths, which are generated during nonlinear propagation of femtosecond pulses in the anomalous dispersion region of a dual-core photonic crystal fibre made of multicomponent glass. Spatial and spectral characteristics of the fibre output radiation were measured separately for both fibre cores under various polarization and intensity conditions upon selective, individual excitation of each fibre core. Polarization-controlled nonlinear switching performance at multiple non-excitation wavelengths was demonstrated in the long-wavelength optical communication bands and beyond. Depending on the input pulse polarization, narrowband switching operation at 1560 nm and 1730 nm takes place with double core extinction ratio contrasts of 9 dB and 14.5 dB, respectively. Moreover, our approach allows switching with simultaneous wavelength shift from 1650 to 1775 nm with extinction ratio contrast larger than 18 dB. In addition, non-reciprocal behaviour of the soliton fission process under different fibre core excitations was observed and its effect on the multi-wavelength nonlinear switching performance was explained, taking into account the slight dual-core structure asymmetry. The obtained results represent ultrafast all-optical switching with an extended dimension of wavelength shift, controllable with both the input radiation intensity and the polarization by simple propagation along a 14 mm long fibre.

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Section: Introductionmentioning

confidence: 99%

Soliton-based ultrafast multi-wavelength nonlinear switching in dual-core photonic crystal fibre

et al. 2014

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“…The fundamental parts of integrated photonics and communication systems include polarization beam splitters (PBSs) [43,44] and optical power beam splitters (BSs) [45]. While a PBS offers a distinct routing of light in the two polarization states known as the TE and TM [46,47], a BS separates the entering light into many pieces at the output [48,49].…”

Section: Phc-based Polarization Maintaining Wgsmentioning

confidence: 99%

Recent Progress in Photonic Crystal Devices and Their Applications: A Review

Gangwar,

Pathak,

Kumar

2023

Photonics

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The research field of photonic crystals (PhCs) remains active on a global scale. PhCs, which are periodic optical nanostructures with the characteristics of excellent light field confinement and numerous varying degrees of freedom, provide a solid foundation for controlling the movement of light. Periodic variation of the index of refraction in two or three spatial dimensions with a substantial high-to-low ratio generates a number of intriguing phenomena and enables a variety of potential functionalities. Recently, intriguing devices based on PhCs, such as Y-branches, small-diameter bent waveguides, and miniature resonator cavities, have been proposed and extensively utilized. PhC waveguides are considered ideal candidates for a variety of applications, such as in power splitters, logic gates, sensing and communication fields, etc. These exceptional characteristics may facilitate the development of a dense integrated circuit. However, PhC technology is still relatively new and therefore requires additional effort to fully exploit it. This paper reviews the most popular and essential optical components based on PhCs, including power splitters, modulators, polarization maintaining devices, sensors, and lasers, to summarize the most recent developments relating this hot topic. These devices have superior performance and a smaller footprint compared to conventional photonic devices.

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