Dynamic LP01–LP11 Mode Conversion by a Tilted Binary Phase Plate

Lee, Yen-Sian; Lim, Kok-Sing; Islam, Md. Rajibul; Lai, Ming Kuen; Ahmad, Harith

doi:10.1109/jlt.2016.2599179

Cited by 19 publications

(4 citation statements)

References 18 publications

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“…In an MDM optical transmission system, a mode converter that serve to convert a particular mode into another mode is often needed at both the input and output ends, and therefore, is a key component [3,4]. In view of this, numerous research efforts have been made toward the development of high-performance mode converters and consequently, various types of mode converters based on bulk-optic components [5,6], optical bers [7,8], and planar lightwave circuit (PLC) [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] have been demonstrated now. Among them, PLC-based mode converters attract more interest because of their distinctive advantages including compactness, material and structure diversity, design and fabrication exibility, and integration capability.…”

Section: Introductionmentioning

confidence: 99%

Compact, broadband, and efficient LP01 -LP11a mode converter based on cascaded asymmetric Y-junction

Zhang

Deng

Wang

et al. 2023

Preprint

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In this paper, a compact and broadband mode converter, which can achieve efficient LP01-LP11a mode conversion, is demonstrated with cascaded asymmetric Y-junction in polymer waveguide. Our typical fabricated converter has a compact footprint of 1.5 mm × 14 µm and shows a mode conversion efficiency larger than ~ 98%, a crosstalk less than ~ −17.5 dB, and an insertion loss lower than ~ 5.8 dB for both x and y polarizations over the C + L band. Our proposed mode converter could find applications in broadband mode-division multiplexing transmission systems.

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Section: Introductionmentioning

confidence: 99%

Compact, broadband, and efficient LP01 -LP11a mode converter based on cascaded asymmetric Y-junction

Zhang

Deng

Wang

et al. 2023

Preprint

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“…As one of the important components of guided-wave optical interconnection, mode converters come in various forms, such as spatial light modulators [ 1 ], binary phase plates [ 2 , 3 ], mode-selective couplers [ 4 , 5 , 6 , 7 ], fiber Bragg gratings [ 8 , 9 , 10 , 11 ], long-period fiber gratings [ 12 , 13 , 14 , 15 ], photonic lanterns [ 16 , 17 , 18 , 19 , 20 ], and multi-planar optical converters [ 21 ]. According to their physical structure, they can be divided into three categories: free-space-based converters, optical fiber-based converters, and waveguide-based mode converters.…”

Section: Introductionmentioning

confidence: 99%

Wavelength-Tunable, Ultra-Broadband, Biconical, Long-Period Fiber Grating Mode Converter Based on the Dual-Resonance Effect

Zheng

Guo

Feng

et al. 2021

Sensors

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We demonstrated a wavelength-tunable, ultra-wideband, biconical, long-period fiber grating (BLPFG) mode converter in a two-mode fiber based on fusion taper technology and CO2 laser writing technology. Theoretical and experimental results show that after changing the diameter of the two-mode fiber by fusing and tapering, the dispersion turning point of the fiber is adjusted and wavelength-tunable broadband mode conversion is achieved efficiently. Theoretical simulation shows that the mode conversion bandwidth can cover the O + E + S + C band. In the experiment, we fabricated adiabatic tapers with cladding diameters of 113 μm and 121 μm and wrote gratings on these tapers to achieve dual-resonance coupling, thus realizing mode conversion from LP01 to LP11, with a 15 dB bandwidth of 148.8 nm from 1229.0 nm to 1377.8 nm and of 168.5 nm from 1319.7 nm to 1488.2 nm, respectively. As far as we know, this is the first time that fusion taper technology has been used to adjust the window of the dual-resonant coupling of an optical fiber. This work broadens the scope of application of the dual-resonance effect and proposes a general method for widening the bandwidth of a fiber grating with tunable wavelength.

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“…Another higher order mode-pass filter, based on dualmode conversion, has been investigated for optical fiber [7]. Mode converters based on binary phase plates is introduced in [8] for optical fiber. The same idea of these converters is developed for silicon-on-insulator (SOI) with an insertion loss of 1.5 dB and a device size of 5 µm x 1 µm [9].…”

Section: Introductionmentioning

confidence: 99%

International Journal of Electronics and Telecommunications

Sharaf,

El-Mashade,

Emran

2021

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On-chip optical-interconnect technology emerges as an attractive approach due to its ultra-large bandwidth and ultra-low power consumption. Silicon-on-insulator (SOI) wire waveguides, on the other hand, have been identified to potentially replace copper wires for intra-chip communication. To take advantage of the wide bandwidth of SOI waveguides, wavelengthdivision multiplexing (WDM) has been implemented. However, WDM have inherent drawbacks. Mode-division multiplexing (MDM) is a viable alternative to WDM in MIMO photonic circuits on SOI as it requires only one carrier wavelength to operate. In this vein, mode converters are key components in on-chip MDM systems. The goal of this paper is to introduce a transverse electric mode converter. The suggested device can convert fundamental transverse electric modes to first-order transverse electric ones and vice versa. It is based on small material perturbation which introduces gradual coupling between different modes. This device is very simple and highly compact; the size of which is 3 µm 2 . Mathematical expressions for both the insertion loss and crosstalk are derived and optimized for best performance. In addition, three-dimensional finite-difference time-domain (3D-FDTD) simulations are performed in order to verify the mathematical model of the device. Our numerical results reveal that the proposed device has an insertion loss of 1.2 dB and a crosstalk of 10.1 dB. The device's insertion loss can be decreased to 0.95 dB by adding tapers to its material perturbation.

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Dynamic LP01–LP11 Mode Conversion by a Tilted Binary Phase Plate

Cited by 19 publications

References 18 publications

Compact, broadband, and efficient LP01 -LP11a mode converter based on cascaded asymmetric Y-junction

Compact, broadband, and efficient LP01 -LP11a mode converter based on cascaded asymmetric Y-junction

Wavelength-Tunable, Ultra-Broadband, Biconical, Long-Period Fiber Grating Mode Converter Based on the Dual-Resonance Effect

International Journal of Electronics and Telecommunications

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