Optimization of linear taper design of a silicon-slab waveguide

Tresna, Wildan Panji; Ahmad, Umar Ali; Putra, Alexander William Setiawan

doi:10.14710/jpa.v4i1.12495

Cited by 3 publications

(6 citation statements)

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“…The coupling loss is the hi ghest loss in the direct coupling between optical fiber and the photonic integrated circuits [2]. At the s ame time, one of the most important parameters in the coupling is the alignment tolerance which should be small in its value.…”

Section: Design Of Sscmentioning

confidence: 99%

“…Here, utilizing the double-tip inv ersed taper is one of the most effective ways to achieve good coupling efficiency. Although, when fabrication process degrades one of the tips, the coupling efficiency does not differ too much [9], [10]. Under such context, we designed and simulated a novel method to efficiently couple an optical fiber to a silicon waveguide (chip) using a conical tapered fiber tip.…”

Section: Design Of Sscmentioning

confidence: 99%

“…We have to pay much attention to reduce the coupling losses caused by the mismatch of optical waveguides used in the system. The coupling loss is a dominant factor compared to another type of losses [2]. Therefore, introducing a spot size converter (SSC) in the end facet of the optical waveguide is an effective way to reduce the coupling loss.…”

Section: Introductionmentioning

confidence: 99%

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Coupling Efficiency of a Spot Size Converter for Optical Fiber-Chip Connections

Tresna¹,

Riana

Septiawan

2023

J. Phys. Appl.

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The light propagation in optical waveguide must be able to maintain low propagation loss, low coupling loss and scattering loss condition, especially in the junction. In this research, a spot size converter is proposed to preserve the lowest coupling loss. This optical converter is composed of a single mode optical fiber (SiO2) including inversed taper. The optical input signal from the optical fiber is launched into photonic integrated circuits and then coupled into the Si-Slab waveguide. Furthermore, linear form with the length dependence has been studied to obtain the optimal position of optical fiber and the chip and analyzed the coupling efficiency of it. The purpose of this research is to procure the optimal form of spot size converter. The simulation result shows the coupling loss of linear form is 0.62 dB and 0.24 dB on TE and TM mode condition respectively. Along with the increase in the taper length, the coupling loss obtained tends to decrease as well. So that, it can be assumed the design of a linear form with 100 μm taper length provides the highest coupling efficie ncy.

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Section: Design Of Sscmentioning

confidence: 99%

Section: Design Of Sscmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Coupling Efficiency of a Spot Size Converter for Optical Fiber-Chip Connections

Tresna¹,

Riana

Septiawan

2023

J. Phys. Appl.

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“…They are easy to fabricate because of their simple design. The propagation losses for SSWs have been determined to be 0.1 dB/mm for TE mode 40,41 and 0.09 dB/mm for TM mode. 41 These minute loss values further prompted us to work with SSWs.…”

Section: Introductionmentioning

confidence: 99%

“…The propagation losses for SSWs have been determined to be 0.1 dB/mm for TE mode 40,41 and 0.09 dB/mm for TM mode. 41 These minute loss values further prompted us to work with SSWs. To test their performance, we have realized the truth table by computing the normalized output power and determined the propagation time delay and decibel losses for each gate.…”

Section: Introductionmentioning

confidence: 99%

Design of silicon slab waveguides based all‐optical logic gates

Aggarwal,

Mittal,

Kalra

2024

Micro & Optical Tech Letters

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Logic gates are an indispensable part of digital circuits, and therefore such devices with fast operating speeds and simple designs are vital for all kinds of electronic applications. This paper proposes simple Y‐shaped designs of all‐optical AND, OR, and NOT logic gates in two dimensions that are operational in both TE and TM modes. These gates are designed using silicon slab waveguides, which makes them relatively easy to fabricate. The logic gates are designed, analyzed, and optimized at 1.55 µm using the finite difference time domain method. The truth tables of the proposed all‐optical logic gates are realized for every input case. The propagation delay time is determined to be of the order of femtoseconds (10−15 s), which is very fast compared to the response time of the currently reported all‐optical logic gates (10−9 ‐ 10−12 s).

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Optimizations of Double Titanium Nitride Thermo-Optic Phase-Shifter Heaters Using SOI Technology

Krause,

Malka

2023

Sensors

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A commercial thermo-optic phase shifter (TOPS) is an efficient solution to the imbalance problem in the fabrication process of Mach–Zehnder modulator (MZM) arms. The TOPS consumes electrical power and transforms it into thermal energy, which changes the real part of the effective refractive index at the waveguide and adjusts the MZM transfer function to work in the linear region. The common model being used today is constructed with only one heater; however, this solution requires more electrical power, which can increase the transmitter system cost. To reduce the system energy cost, we propose a pioneering optimal double titanium nitride heater model under forward biasing at 1550 nm wavelength using the standard silicon-on-insulator technology. Numerical investigations were carried out on the key relative geometrical parameters, heat distribution at the silicon layer, thermal crosstalk, and laser wavelength drift. Results show that the optimal TOPS design can function with a low electrical power of 19.1 mW to achieve a π-phase shift, with a low thermal crosstalk of 0.404 and very low optical losses over 1 mm length. Thus, the proposed device can be used for improving the imbalance problem in MZMs with low electrical power consumption and low losses. This functionality can be utilized to obtain better performances in transmitter systems for data centers and long-range optical communication system applications.

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Optimization of linear taper design of a silicon-slab waveguide

Cited by 3 publications

References 0 publications

Coupling Efficiency of a Spot Size Converter for Optical Fiber-Chip Connections

Coupling Efficiency of a Spot Size Converter for Optical Fiber-Chip Connections

Design of silicon slab waveguides based all‐optical logic gates

Optimizations of Double Titanium Nitride Thermo-Optic Phase-Shifter Heaters Using SOI Technology

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