Optical Vector Network Analyzer Based on Unbalanced Double-Sideband Modulation

Wang, Muguang; Yao, Jianping

doi:10.1109/lpt.2013.2249058

Cited by 58 publications

(31 citation statements)

References 12 publications

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“…Recently, the OVNA based on optical single sideband (OSSB) modulation has attracted great attentions because of its high measurement accuracy and resolution [8]- [16]. The OSSB modulation as a promising technique has been extensively investigated to overcome the power fading induced by fiber dispersion in long-distance radio-over-fiber (ROF) system and achieve high accuracy and resolution spectral characterization in OVNA.…”

Section: Introductionmentioning

confidence: 99%

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Optical Vector Network Analyzer With Improved Accuracy Based on Brillouin-Assisted Optical Carrier Processing

Wang

Liu

et al. 2014

IEEE Photonics J.

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We propose a new method to improve the accuracy of an optical vector network analyzer (OVNA) based on stimulated Brillouin scattering (SBS) in a dispersionshifted fiber (DSF). Generally, the measurement error of the OVNA mainly derives from the beat signals between adjacent optical sidebands. In this paper, the measurement error is significantly suppressed using a two-step measurement process. For the first measurement, both the transmission response of an optical device-under-test (ODUT) and the measurement error are recorded. For the second measurement, only the measurement error is obtained by suppressing the optical carrier using SBS in the DSF. The accurate transmission response of the ODUT is subsequently extracted by subtracting the error from the first measurement. The proposed method is theoretically investigated and experimentally demonstrated. The experimental results show that the accuracy of the OVNA is significantly improved.

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Section: Introductionmentioning

confidence: 99%

“…Wang et al proposed another powerful method based on an unbalanced DSB modulation scheme to suppress the measurement error. However, the influence of the beating between the adjacent high order sidebands could not be subtracted in this way [16].…”

Section: Introductionmentioning

confidence: 99%

Optical Vector Network Analyzer With Improved Accuracy Based on Brillouin-Assisted Optical Carrier Processing

Wang

Liu

et al. 2014

IEEE Photonics J.

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“…For instance, the bandwidth of the OSSB modulator is always limited by the performance of the electrical or speciallydesigned optical devices, such as 90-degree electrical hybrid couplers [5] or phase-shifted fiber Bragg gratings (FBGs) [6], [7]. Besides, the residual undesirable first-order sideband and higher-order sidebands of the conventional OSSB modulation would contributes significantly to the measurement error [8], [9]. To increase the bandwidth of the OSSB modulation, we recently achieved a wideband and wavelength tunable OSSB modulator with 40-dB sideband suppression by using a tunable optical band pass filter (OBPF) with steep edges and a flat top [10].…”

Section: Introductionmentioning

confidence: 99%

“…To increase the bandwidth of the OSSB modulation, we recently achieved a wideband and wavelength tunable OSSB modulator with 40-dB sideband suppression by using a tunable optical band pass filter (OBPF) with steep edges and a flat top [10]. More recently, an accuracy improved OVNA based on an unbalanced double sideband modulation (UB-DSB) was proposed [9]. Although the influence of the residual first-order sideband is removed by a post-processing stage, the influence of the second-order sidebands still exists.…”

Section: Introductionmentioning

confidence: 99%

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A high-resolution optical vector network analyzer with the capability of measuring bandpass devices

Tang

Pan

2013

2013 IEEE International Topical Meeting on Microwave Photonics (MWP)

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A high-resolution optical vector network analyzer (OVNA) based on a novel optical single sideband (OSSB) modulation is proposed and experimentally demonstrated. The key module in the proposed OVNA is the novel OSSB modulator with all even-and negative-order sidebands suppressed. When the OSSB modulator is applied into the OVNA, both the bandpass and bandstop responses can be measured. The measurement of the reflection and transmission responses of a fiber Bragg grating (FBG) is successfully performed. This is the first time that the OSSB-based OVNA is used to measure the bandpass devices.

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Large signal analysis on microwave photonic generation using an asymmetric dual‐drive Mach–Zehnder modulator and with different modulation indices

Ferreira

Ribeiro

Spadoti

2022

Micro & Optical Tech Letters

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This paper proposes an exact closed‐form frequency domain analytical solution for large‐signal conditions to analyze a microwave photonic signal generator that employs external electro‐optic intensity modulation and direct detection. The detected power of the generated microwave signal was used to evaluate the effect of an asymmetric dual‐drive Mach–Zehnder modulator with finite extinction ratio and using different modulation indices. Considering these effects simultaneously, a full analysis of different bias and phase shifts is also theoretically investigated. The optimum modulation index that maximizes a desired generated microwave frequency is shown here. For a given generated harmonic, the modulation index increases by around 40%. Comparing with the ideal situation, that is, symmetric modulator and using equal modulation indices, for the same harmonic, there is a reduction of around 0.2 dB in the power level and an increase of around 10% in the modulation index to achieve maximum power.

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Optical Vector Network Analyzer Based on Unbalanced Double-Sideband Modulation

Cited by 58 publications

References 12 publications

Optical Vector Network Analyzer With Improved Accuracy Based on Brillouin-Assisted Optical Carrier Processing

Optical Vector Network Analyzer With Improved Accuracy Based on Brillouin-Assisted Optical Carrier Processing

A high-resolution optical vector network analyzer with the capability of measuring bandpass devices

Large signal analysis on microwave photonic generation using an asymmetric dual‐drive Mach–Zehnder modulator and with different modulation indices

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