Ray-optical determination of the coupling coefficients of grating waveguide by use of the rigorous coupled-wave theory

Park, Seo-Young; Song, Seok Ho; Oh, Cheol; Kim, Pill-Soo

doi:10.1109/50.914493

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…Theoretical calculation [18] and practical measurement using a larger area (5 mm × 5 mm) Germanium detector show that the powers radiated upward and downward are approximately equal to each other. In the following measurement, only the downward emission is imaged, as will be shown in Section IV.…”

Section: Pic Fabricationmentioning

confidence: 94%

Two-Dimensional Optical Beam Steering With InP-Based Photonic Integrated Circuits

Guo

Binetti

Althouse

et al. 2013

IEEE J. Select. Topics Quantum Electron.

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Two-dimensional optical beam steering using an InP photonic integrated circuit has been demonstrated. Lateral beam steering controlled by a 1-D phased array has been made easier through on-chip interferometer monitors. Longitudinal beam steering controlled by the input wavelength has demonstrated an efficiency of 0.14 • /nm. Very fast beam steering (>10 7 • /s) in both dimensions has been demonstrated as well. As the latest development, a widely tunable sampled-grating distributed Bragg reflector laser has been monolithically integrated and 2-D beam steering has been demonstrated with this on-chip tunable laser source.Index Terms-Light detection and ranging (LIDAR), optical beam steering, optical phased array (OPA), photonic integrated circuits (PICs).

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Section: Pic Fabricationmentioning

confidence: 94%

Two-Dimensional Optical Beam Steering With InP-Based Photonic Integrated Circuits

Guo

Binetti

Althouse

et al. 2013

IEEE J. Select. Topics Quantum Electron.

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Effect of interaction between the internal cavity and external cavity on beam properties in a spectrally beam combined system

Ito

Akiyama

et al. 2018

J. Opt. Soc. Am. A

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A high-power beam can be achieved in spectrally beam combined systems due to the interaction between internal and external cavities. In order to investigate effects of the coupled cavity on the combined beam, we started with the derivation of the equivalent reflectance and transmittance of the external cavity based on a multilayer dielectric grating (MDG). Then, photons in active regions of diode lasers with/without feedback were calculated by utilizing Lang-Kobayashi rate equations. The results indicate that the lens and the MDG have an obvious impact on both the reflectance and transmittance of the external cavity, which determine whether the photons of a laser with feedback are larger or smaller than those without feedback. The photons of the laser with feedback and the transmittance of the external cavity codetermine the combining efficiency. Impacts of the confinement factor and spontaneous emission factor of diode laser emitters on the coupled cavity are similar to those on a common laser internal cavity. Spectral compositions of the combined beam have different brightness from each other.

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Ray-optical determination of the coupling coefficients of grating waveguide by use of the rigorous coupled-wave theory

Cited by 2 publications

References 9 publications

Two-Dimensional Optical Beam Steering With InP-Based Photonic Integrated Circuits

Two-Dimensional Optical Beam Steering With InP-Based Photonic Integrated Circuits

Effect of interaction between the internal cavity and external cavity on beam properties in a spectrally beam combined system

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