Variable splitting ratio 2 × 2 MMI couplers using multimode waveguide holograms

Tseng, Shuo Yen; Fuentes-Hernández, Canek; Owens, Daniel; Kippelen, Bernard

doi:10.1364/oe.15.009015

Cited by 42 publications

(17 citation statements)

References 13 publications

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“…Here, we use the TE (Transverse Electric) polarization and operating wavelength 1550-nm for analyses and simulations. If the uniformity of the time harmonic of TE-polarized waves can be assumed along the x direction of Figure 1, the simulation can be done assuming it as a 2D structure (Bahrami, Mohammadnejad, & Rostami, 2011;Tseng, Fuentes-Hernandez, Owens, & Kippelen, 2007). In order to reduce time consuming but still have accurate results.…”

Section: Design and Optimizationmentioning

confidence: 99%

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All-Optical Switches Based on 3×3 Multimode Interference Couplers Using Nonlinear Directional Couplers

Truong¹,

Le²,

Tran³

2013

APR

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Multimode interference in optical waveguide is attractive for all optical switching. In this paper, a novel 3×3 all-optical switch based on 3×3 multimode interference (MMI) structures is proposed. Nonlinear directional couplers in two arms of the structure are used as phase shifters. In this study, we use chalcogenide glass on silica for designing the device structure. The switching states of the device can be controlled by adjusting the optical control signals at the phase shifters. The transfer matrix method and beam propagation method (BPM) are used for designing and optimizing the device structure.

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Section: Design and Optimizationmentioning

confidence: 99%

“…In order to reduce time consuming but still have accurate results. a 3D device structure is converted to a 2D structure using the effective index method (EIM) first, then the 2D-BPM method is used for simulations (Tseng, Fuentes-Hernandez, Owens, & Kippelen, 2007).…”

Section: Design and Optimizationmentioning

confidence: 99%

All-Optical Switches Based on 3×3 Multimode Interference Couplers Using Nonlinear Directional Couplers

Truong¹,

Le²,

Tran³

2013

APR

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“…Several power splitting technologies have been developed, such as adiabatic Y branches [3], directional couplers [4], and multimode interference (MMI) couplers [5]. Some special MMI couplers based on special design are proposed to realize the function of arbitrary power splitting ratio, such as surface relief holograms [6], angled structure [7], special butterfly geometrical structure [8], cascaded step-size structure [9], quick response (QR) code-like structure [10], and asymmetric interference structure [11]. Some of those techniques are wavelength sensitive and some are wavelength insensitive.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Solution for Broadband PLC Splitter with Variable Splitting Ratio Based on Asymmetric Three Waveguide Structures

2019

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A numerical solution for the broadband planar-lightwave-circuit (PLC) splitter with a variable splitting ratio based on asymmetric three waveguides weighted by the Blackman weighting function is designed for passive optical network applications with wavelengths between 1.53 and 1.57 µm. The performance of the proposed splitter is verified using the beam propagation method (BPM). It was found that a polynomial function of the splitting ratios accompanying a geometrical shift can be derived from the proposed splitter. The splitting ratio can be changed from 50:50 to 90:10 with this geometrical shift. The excess loss, crosstalk, polarization dependent loss, and splitting ratio variations against wavelength of the proposed splitter with wavelengths between 1.53 and 1.57 µm are better than 0.139 dB, −22.75 dB, 0.006 dB, and 0.335%, respectively. Obviously, the proposed splitter with variable splitting ratio retains the advantages of the symmetric design, such as low excess loss, low crosstalk, polarization insensitivity, broadband, and wavelength insensitivity.

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“…Several adaptive OPS technologies have been reported based on tuned fiber Bragg gratings (FBGs) [14], optical polarization splitters [15], semiconductor optical amplifiers [16], [17], waveguide couplers and planar lightwave circuits (PLCs) [18]- [20], MEMS [21], and Opto-VLSI [22]- [24]. However, these techniques have limited tolerance to environmental perturbations, high polarization dependence, and limited numbers of output ports.…”

Section: Introductionmentioning

confidence: 99%

A $1 \times N$ Lossless Adaptive Optical Power Splitter Employing an Opto-VLSI Processor

2013

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We propose and demonstrate the concept of a novel 1 Â N lossless adaptive optical power splitter (OPS) structure integrating a software-driven Opto-VLSI processor, optical amplifiers, and an array of 4-f imaging systems. The active area of the Opto-VLSI processor is divided into M pixel blocks driven by multicasting phase holograms and aligned with an M-element lens array and a fiber array, thus forming an array of 4-f imaging systems.Each 4-f imaging system is capable of collimating and adaptively splitting an input optical beam emerging from an optical fiber and then coupling the split beams into different output fiber ports, thus realizing dynamic optical power splitting. The Opto-VLSI processor is driven by optimized multicasting phase holograms that adaptively split an incident laser beam along different angles; thus, user-defined splitting ratios can be achieved. Experimental results show that the optical amplifiers compensate for the splitting and the insertion losses, making the adaptive OPS lossless.

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Variable splitting ratio 2 × 2 MMI couplers using multimode waveguide holograms

Cited by 42 publications

References 13 publications

All-Optical Switches Based on 3×3 Multimode Interference Couplers Using Nonlinear Directional Couplers

All-Optical Switches Based on 3×3 Multimode Interference Couplers Using Nonlinear Directional Couplers

A Numerical Solution for Broadband PLC Splitter with Variable Splitting Ratio Based on Asymmetric Three Waveguide Structures

A $1 \times N$ Lossless Adaptive Optical Power Splitter Employing an Opto-VLSI Processor

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