New design method for low-loss Y-branch waveguides

Yabu, Tetsuro; Geshiro, Masahiro; Sawa, Shinnosuke

doi:10.1109/50.948285

Cited by 17 publications

(7 citation statements)

References 11 publications

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“…A more mathematical approach to optimize the shape of a coupler can be found in [8], where the problem is presented as a nonlinear inverse problem. Also building on inverse problem theory is the optimization of a 3-dB Y-splitter in [9].…”

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confidence: 99%

Efficient nonadiabatic planar waveguide tapers

Luyssaert

Bienstman

Vandersteegen

et al. 2005

J. Lightwave Technol.

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Abstract-We report taper designs with high transmission efficiencies and with lengths shorter than those needed for adiabatic operation. The tapering occurs between rectangular optical waveguides with the same vertical silicon-on-insulator layer structure, but with different horizontal widths, namely 0.5 and 2.0 µm, and for taper lengths between 0.5 and 3.0 µm. After a comparison between two different optimization methods in a two-dimensional calculation scheme, one of these is repeated using three-dimensional calculations. The results show that, also in the length region where conventional linear and parabolic tapers are not yet adiabatic, tapers with a high efficiency can be designed by applying complex taper structures with more degrees of freedom.

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confidence: 99%

Efficient nonadiabatic planar waveguide tapers

Luyssaert

Bienstman

Vandersteegen

et al. 2005

J. Lightwave Technol.

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“…Specially, low insertion loss, which is composed of conductor, dielectric, radiative, and coupling losses, is desirable for practical applications. Coupling loss, which is typically the dominant contributor among these losses, is dependent upon the coupling efficiency [2]. Generally, conventional patch resonators have two coupling gaps between the feed line and the patch resonator, and these coupling gaps affect the performance of the patch resonator.…”

Section: Introductionmentioning

confidence: 99%

“…Dual-mode resonators have found widespread applications for satellite and wireless mobile-communication systems because they are characterized by small size, light weight, and low cost [2,3]. An electrical coupling of two resonant modes generates a geometrical resonator, such as the ring resonator or the patch resonator.…”

Section: Introductionmentioning

confidence: 99%

“…In the subscriber network of a passive optical network (PON), a power-splitter waveguide can be used to distribute optical power from one input channel into several output ones. Conventional 1 ϫ N power splitters are constructed by cascading Y-branch waveguides [1,2]; the dimensions of the opticalpower splitter become very large, as the number of output ports increases. Consequently, it is desirable to develop a new structure for compact, multibranch, planar power splitters.…”

Section: Introductionmentioning

confidence: 99%

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Guided‐wave microlens array applications to compact 1 × 8 planar waveguide splitters

Chang

Hsieh

2004

Micro & Optical Tech Letters

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A compact 1 × 8 waveguide splitter using a guided‐wave microlens array is presented and analyzed to show low insertion loss and output imbalance of 0.28 and 0.15 dB, respectively. The analysis results show that the proposed equal‐power splitter with insensitive wavelength responses and acceptable fabrication tolerances is applicable for compact and wide‐bandwidth integrated optical devices. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 43: 29–33, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20365

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“…As a result, it is very desirable to design and fabricate Y-branch waveguides with large angle and low loss. In recent years, many efforts [1][2][3][4][5][6][7][8][9][10] have been devoted to reduce the radiation of Y-branch waveguides. However it is generally difficult to fabricate these waveguides, because the optical characteristics are sensitive to their structure parameters.…”

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confidence: 99%

Design for Y-branch waveguides with wide angle and low loss

Tang

Liao

et al. 2009

Optoelectron. Lett.

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A novel method to design Y-branch waveguides is proposed by using total internal reflection, and the optical properties are analyzed. The simulated results show that the optical loss values of two Y-branch waveguides with the branching angles of 12 o and 30 o are only 0.310 dB and 0.645 dB, respectively. Compared with conventional Y-branch waveguides, the optical performance of the proposed ones is well improved, which has many advantages such as wide angle, low loss, simple structure and easy for fabrication.

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New design method for low-loss Y-branch waveguides

Cited by 17 publications

References 11 publications

Efficient nonadiabatic planar waveguide tapers

Efficient nonadiabatic planar waveguide tapers

Guided‐wave microlens array applications to compact 1 × 8 planar waveguide splitters

Design for Y-branch waveguides with wide angle and low loss

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