Bending of a planar lightwave circuit 2/spl times/2 coupler to desensitize it to wavelength, polarization, and fabrication changes

Doerr, C.R.; Cappuzzo, M.; Chen, E.; Wong-Foy, A.; Gomez, L.; Griffin, Andrew; Buhl, L. L.

doi:10.1109/lpt.2005.846922

Cited by 62 publications

(30 citation statements)

References 9 publications

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“…4(c) and 4(d). This tendency of the DCs was reported theoretically and experimentally in [6], and the curved coupler was proposed to reduce the wavelength dependence [7].…”

Section: Wavelength Dependences Of Three Type Couplerssupporting

confidence: 63%

Comparative simulation of three types of 3-dB coupler using a Si wire waveguide

Tanaka

Ikuma

Tsuda

et al. 2010

International Conference on Communications and Electronics 2010

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We have proposed a cross gap coupler (CGC), which has an X-junction with an internal mirror at the cross section. We compared the splitting properties of three types of 3-dB coupler using a silicon wire waveguide; a CGC, a directional coupler (DC), and a multimode interference (MMI) coupler. The wavelength dependences of these structures were simulated (or evaluated) by two-dimensional finite-difference time-domain (2-D FDTD) method. The CGC showed smaller wavelength dependence in comparison to the other types of coupler.

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“…4(c) and 4(d). This tendency of the DCs was reported theoretically and experimentally in [6], and the curved coupler was proposed to reduce the wavelength dependence [7].…”

Section: Wavelength Dependences Of Three Type Couplerssupporting

confidence: 63%

Comparative simulation of three types of 3-dB coupler using a Si wire waveguide

Tanaka

Ikuma

Tsuda

et al. 2010

International Conference on Communications and Electronics 2010

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“…However, MMI couplers have excess loss and are sensitive to linewidth and connecting waveguide position [14]. Finally, a curved directional coupler using silica waveguide is also reported as one of the broadband coupler [15]. This coupler has very simple structure with only provide the curvature into the coupling region of conventional directional couplers.…”

Section: Introductionmentioning

confidence: 99%

Reduction of Wavelength Dependence of Coupling Characteristics Using Si Optical Waveguide Curved Directional Coupler

Morino

Minamikawa

Iiyama

2014

J. Lightwave Technol.

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Directional couplers are widely used as one of the key components of optical integrated circuits. However, the coupling efficiency of the conventional directional coupler is highly sensitive to wavelength. This sensitivity degrades the characteristics of devices that contain directional couplers for wavelength division multiplexing transmission. A curved directional coupler has been proposed using silica optical waveguide as one of the coupler which realize wavelength insensitive, small footprint and tolerant to fabrication. In this paper, we theoretically investigated this curved coupler using Si wire waveguide and got results that the curved coupler whose bending radius of 21 μm and coupling length of 7.40 μm can reduce the wavelength dependence and achieve about a sevenfold enhancement of operational bandwidth in the transmittance variation range of −3 ± 0.1 dB compared with conventional directional coupler.

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“…One of the simplest, yet fundamental types, of integrated photonic components are directional couplers. Coupler structures have numerous applications in, among others, Mach-Zehnder interferometers (Doerr et al 2005;Petousi et al 2015), filters (Yu et al 2011;Zhang and Pan 2013), and switches (de Valicourt et al 2014;Krishnamurthy et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Fast Optimization of Integrated Photonic Components Using Response Correction and Local Approximation Surrogates

Bekasiewicz

Koziel

Leifsson

2015

Procedia Computer Science

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A methodology for a rapid design optimization of integrated photonic couplers is presented. The proposed technique exploits variable-fidelity electromagnetic (EM) simulation models, additive response correction for accommodating the discrepancies between the EM models of various fidelities, and local response surface approximations for a fine tuning of the final design. A specific example of a 1,555 nm coupler is considered with an optimum design obtained at a computational cost corresponding to about 24 high-fidelity EM simulations of the structure.

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Bending of a planar lightwave circuit 2/spl times/2 coupler to desensitize it to wavelength, polarization, and fabrication changes

Cited by 62 publications

References 9 publications

Comparative simulation of three types of 3-dB coupler using a Si wire waveguide

Comparative simulation of three types of 3-dB coupler using a Si wire waveguide

Reduction of Wavelength Dependence of Coupling Characteristics Using Si Optical Waveguide Curved Directional Coupler

Fast Optimization of Integrated Photonic Components Using Response Correction and Local Approximation Surrogates

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