Ultra wideband measurement for arbitrary spectral response using double sideband modulation and low-frequency detection

Feng, Danqi; Gao, Ya; Zhang, Xiaohu; Zhu, Tao; Cao, Rui

doi:10.1016/j.optcom.2019.125198

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…Nowadays, periodic diffraction has played an important role in many fields of engineering, especially in optoelectronic systems. For instance, it can be used in laser systems [1][2][3][4], optical communication systems [5][6][7], optical detection [8][9][10][11], and so on. Different parameters of the grating and incident conditions can cause different performance of the grating.…”

Section: Introductionmentioning

confidence: 99%

Pencil-like periodic ridges under second Bragg incidence as dual-function beam separation

Lin

Wang

2021

Laser Phys.

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A reflective dual-function pencil-like grating under second Bragg incidence is proposed in this paper. The finite element analysis method is chosen to be the research technique of this grating. Based on it, the influence of the incident angle, period, duty cycle, incident wavelength, and other parameters on the diffraction efficiency are analyzed in detail. At an incident laser wavelength of 1.55 μm, for TE polarization, the efficiency of −2nd order is 96.57% so that the proposed grating can be regarded as a single-port high-efficiency reflective grating. For TM polarization, the grating can function as a dual-port grating with the efficiency 46.03% for 0th order and 45.96% for −2nd order. What is more, the proposed grating has a broader angular bandwidth compared with other dual-function gratings, which ensures the diffraction performance of the grating while allowing some operational changes.

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Section: Introductionmentioning

confidence: 99%

Pencil-like periodic ridges under second Bragg incidence as dual-function beam separation

Lin

Wang

2021

Laser Phys.

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Cascaded HfO ₂ /SiO ₂ microstructure for symmetrical two-port beam dispersion

Zou,

Wang

2023

Journal of Electromagnetic Waves and Applications

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A new scheme for seven-port division via reflective arrays on a connecting slab

et al. 2023

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A seven-port division is described via the connecting-slab-based reflective grating in this paper. The rigorous coupled wave analysis (RCWA) and simulated annealing algorithm (SAA) are chosen to analyze and optimize the performance of the grating. The total diffraction efficiency of TE and TM polarization is 96.75% and 95.53%, respectively. Besides, the target grating has good uniformity errors, which are reduced to 3.69% and 1.76% for TE and TM polarization, respectively. The modal method provides a physical explanation for the energy transformations within the target grating. Furthermore, the manufacturing tolerance is discussed for the seven-port division grating. Through analysis and discussion, various performances of the grating can be better demonstrated. Compared with most seven-port grating splitters reported previously, the grating in this paper achieves better diffraction efficiency uniformity and higher efficiency.

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Ultra wideband measurement for arbitrary spectral response using double sideband modulation and low-frequency detection

Cited by 3 publications

References 19 publications

Pencil-like periodic ridges under second Bragg incidence as dual-function beam separation

Pencil-like periodic ridges under second Bragg incidence as dual-function beam separation

Cascaded HfO ₂ /SiO ₂ microstructure for symmetrical two-port beam dispersion

A new scheme for seven-port division via reflective arrays on a connecting slab

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Ultra wideband measurement for arbitrary spectral response using double sideband modulation and low-frequency detection

Cited by 3 publications

References 19 publications

Pencil-like periodic ridges under second Bragg incidence as dual-function beam separation

Pencil-like periodic ridges under second Bragg incidence as dual-function beam separation

Cascaded HfO 2 /SiO 2 microstructure for symmetrical two-port beam dispersion

A new scheme for seven-port division via reflective arrays on a connecting slab

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Cascaded HfO ₂ /SiO ₂ microstructure for symmetrical two-port beam dispersion