Phase noise suppression for RF signal remote fiber transmission using phase balance compensation feedback network in phase shifter

Zhai, Wei; Ye, Xin; Xie, Mutong; Zhao, Mingyang; Huang, Shanguo

doi:10.1016/j.ijleo.2017.12.010

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…The frequency stability of waveguide devices is crucial for all the above applications, especially high-sensitivity frequency-variation systems [11]. Unexpected frequency offsets can lead to performance degradation or even failure in the systems [12,13].…”

Section: Introductionmentioning

confidence: 99%

Microwave Frequency Offset Induced by Subsurface Damage in Abrasive-Machined Semiconductor Ceramic Waveguide

Wang,

Wei,

Lin

et al. 2023

Machines

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Ceramic waveguide components play a critical role in modern microwave semiconductor systems. For the first time, this work reports experimental results obtained when dielectric ceramics are abrasive-machined into waveguide components. This process will cause subsurface damage (SSD), resulting in a deviation in their working frequency which can degrade the performance of the system. For a substrate-integrated waveguide (SIW) resonator working at 10.1 GHz, SSD with a depth of 89 um can cause a maximum frequency offset of 20.2%. For a mm wave component working at 70 GHz, the corresponding frequency offset could increase to 169%. Three resonator SIW filters with SSD are studied, and the results demonstrate that the frequency offset induced by SSD can reduce the pass rate of the filters from 95.4% to 0%. A theoretical analysis is performed to reveal the mechanism and to offer a quantitative estimation of the limiting range of the offset caused by SSD. Feasible methods for reducing the offset caused by SSD, such as structure design, processing optimization, and material reinforcement, are discussed.

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Section: Introductionmentioning

confidence: 99%

Microwave Frequency Offset Induced by Subsurface Damage in Abrasive-Machined Semiconductor Ceramic Waveguide

Wang,

Wei,

Lin

et al. 2023

Machines

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“…As the basic unit of optical communication (1), the optical phase shifter plays an important role in phase dimension adjustment (2,3). Especially in the structural design of optical devices, the deviation of the processing size accuracy will cause the optical signal to deviate during the propagation process, particularly for some A c c e p t e d M a n u s c r i p t devices that strictly require the interference of the optical signal, the phase shifter is extremely important.…”

Section: Introductionmentioning

confidence: 99%

“…Under this carrier distribution condition, the refractive index inside the waveguide is shown inFigure 2 (d).From Figure 2 (d), it can be seen that the refractive index of the p-type region is significantly reduced, the refractive index of the n-type region is slightly reduced. This is because the change in refractive index is related to the carrier concentration and the relationship is formula(2). Due to the high carrier concentration on both sides and the low concentration in the middle, the refractive index changes on both sides are relatively large.…”

mentioning

confidence: 99%

Design and optimization of diamond mid-infrared phase shifter

Chen

Zhi

et al. 2021

Functional Diamond

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Herein, the mid-infrared (7.7-13.7 μm) diamond-based phase shifter was designed and optimized by finite-element analysis. The ridge-shaped diamond waveguide is designed and doped to form the internal p-n structure, and the internal carrier distribution is changed by applying forward and reverse voltages to change the effective refractive index to achieve the effect of π-phase shift. The results show that when p-doping concentration is 4×10 17 cm-3 and n doping concentration is 1×10 18 cm-3 , upon the reverse voltage (8 V) is applied, the change of the real part of effective refractive index (ΔR) is 1.6×10-5 , and the length of the phase shifter (L) required to realize the π-phase shift is 241 mm; upon the forward voltage (-8 V) is applied, ΔR increases to 3.2×10-4 , and the length of the phase shifter required is shortened to 12.03 mm. Such a short length is relatively easy in industrial production. In order to make the refractive index distribution more uniform, the carrier concentration has been optimized as 1×10 17 cm-3 for p-type and 4×10 17 cm-3 for n-type, respectively.

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Photonic phase shifter of phase-coded microwave signal with programmabilities

Zhai

et al. 2021

Asia Communications and Photonics Conference 2021

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Phase noise suppression for RF signal remote fiber transmission using phase balance compensation feedback network in phase shifter

Cited by 3 publications

References 13 publications

Microwave Frequency Offset Induced by Subsurface Damage in Abrasive-Machined Semiconductor Ceramic Waveguide

Microwave Frequency Offset Induced by Subsurface Damage in Abrasive-Machined Semiconductor Ceramic Waveguide

Design and optimization of diamond mid-infrared phase shifter

Photonic phase shifter of phase-coded microwave signal with programmabilities

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