X. Xie, R. Bouchand, D. Nicolodi, M. Giunta, W. Hänsel, M. Lezius, A. Joshi, S. Datta, C. Alexandre, M. Lours, P. A. Tremblin, G. Santarelli, R. Holzwarth, and Y. Le Coq, “Photonic microwave signals with zeptosecond-level absolute timing noise,” Nat. Photonics 11(1), 44–47 (2017).

[Crossref]

C. L. Holloway, M. T. Simons, J. A. Gordon, P. F. Wilson, C. M. Cooke, D. A. Anderson, and G. Raithel, “Atom-based rf electric field metrology: From self-calibrated measurements to subwavelength and near-field imaging,” IEEE Trans. Electromagn. Compat. 59(2), 717–728 (2017).

[Crossref]

W. Roh, J. Y. Seol, J. Park, B. Lee, Y. Kim, and F. Aryanfar, “Millimeter-wave beamforming as an enabling technology for 5G cellular communications: Theoretical feasibility and prototype results,” IEEE Commun. Mag. 52(2), 106–113 (2014).

[Crossref]

B. Wang, C. Gao, W. Chen, J. Miao, X. Zhu, Y. Bai, J. W. Zhang, Y. Y. Feng, T. C. Li, and L. J. Wang, “Precise and continuous time and frequency synchronization at the 5× 10-19 accuracy level,” Sci. Rep. 2(1), 556 (2012).

[Crossref]
[PubMed]

T. M. Fortier, M. S. Kirchner, F. Quinlan, J. Taylor, J. C. Bergquist, T. Rosenband, N. Lemke, A. Ludlow, Y. Jiang, C. W. Oates, and S. A. Diddams, “Generation of ultra-stable microwaves via optical frequency division,” Nat. Photonics 5(7), 425–429 (2011).

[Crossref]

X. Xie, R. Bouchand, D. Nicolodi, M. Giunta, W. Hänsel, M. Lezius, A. Joshi, S. Datta, C. Alexandre, M. Lours, P. A. Tremblin, G. Santarelli, R. Holzwarth, and Y. Le Coq, “Photonic microwave signals with zeptosecond-level absolute timing noise,” Nat. Photonics 11(1), 44–47 (2017).

[Crossref]

Y. Liu, T. Hao, W. Li, J. Capmany, N. Zhu, and M. Li, “Observation of parity-time symmetry in microwave photonics,” Light Sci. Appl. 7(1), 38 (2018).

[Crossref]

B. Wang, C. Gao, W. Chen, J. Miao, X. Zhu, Y. Bai, J. W. Zhang, Y. Y. Feng, T. C. Li, and L. J. Wang, “Precise and continuous time and frequency synchronization at the 5× 10-19 accuracy level,” Sci. Rep. 2(1), 556 (2012).

[Crossref]
[PubMed]

X. Xu, J. Wu, T. G. Nguyen, T. Moein, S. T. Chu, B. E. Little, R. Morandotti, A. Mitchell, and D. J. Moss, “Photonic microwave true time delays for phased array antennas using a 49 GHz FSR integrated optical micro-comb source,” Photon. Res. 6(5), B30–B36 (2018).

[Crossref]

C. L. Holloway, M. T. Simons, J. A. Gordon, P. F. Wilson, C. M. Cooke, D. A. Anderson, and G. Raithel, “Atom-based rf electric field metrology: From self-calibrated measurements to subwavelength and near-field imaging,” IEEE Trans. Electromagn. Compat. 59(2), 717–728 (2017).

[Crossref]

X. Xu, J. Dai, Y. Dai, F. Yin, Y. Zhou, J. Li, J. Yin, Q. Wang, and K. Xu, “Broadband and wide-range feedback tuning scheme for phase-locked loop stabilization of tunable optoelectronic oscillators,” Opt. Lett. 40(24), 5858–5861 (2015).

[Crossref]
[PubMed]

X. Xu, J. Dai, Y. Dai, F. Yin, Y. Zhou, J. Li, J. Yin, Q. Wang, and K. Xu, “Broadband and wide-range feedback tuning scheme for phase-locked loop stabilization of tunable optoelectronic oscillators,” Opt. Lett. 40(24), 5858–5861 (2015).

[Crossref]
[PubMed]

X. Xie, R. Bouchand, D. Nicolodi, M. Giunta, W. Hänsel, M. Lezius, A. Joshi, S. Datta, C. Alexandre, M. Lours, P. A. Tremblin, G. Santarelli, R. Holzwarth, and Y. Le Coq, “Photonic microwave signals with zeptosecond-level absolute timing noise,” Nat. Photonics 11(1), 44–47 (2017).

[Crossref]

T. M. Fortier, M. S. Kirchner, F. Quinlan, J. Taylor, J. C. Bergquist, T. Rosenband, N. Lemke, A. Ludlow, Y. Jiang, C. W. Oates, and S. A. Diddams, “Generation of ultra-stable microwaves via optical frequency division,” Nat. Photonics 5(7), 425–429 (2011).

[Crossref]

D. Eliyahu, K. Sariri, A. Kamran, and M. Tokhmakhian, “Improving short and long term frequency stability of the optoelectronic oscillator,” in proceeding of IEEE Conference on International Frequency Control Symposium and PDA Exhibition Jointly (2002), pp. 580–583.

D. Eliyahu, D. Seidel, and L. Maleki, “Phase noise of a high performance OEO and an ultra-low noise floor cross-correlation microwave photonic homodyne system,” in proceeding of IEEE Conference on International Frequency Control Symposium (2008), pp. 811–814.

[Crossref]

B. Wang, C. Gao, W. Chen, J. Miao, X. Zhu, Y. Bai, J. W. Zhang, Y. Y. Feng, T. C. Li, and L. J. Wang, “Precise and continuous time and frequency synchronization at the 5× 10-19 accuracy level,” Sci. Rep. 2(1), 556 (2012).

[Crossref]
[PubMed]

T. M. Fortier, M. S. Kirchner, F. Quinlan, J. Taylor, J. C. Bergquist, T. Rosenband, N. Lemke, A. Ludlow, Y. Jiang, C. W. Oates, and S. A. Diddams, “Generation of ultra-stable microwaves via optical frequency division,” Nat. Photonics 5(7), 425–429 (2011).

[Crossref]

B. Wang, C. Gao, W. Chen, J. Miao, X. Zhu, Y. Bai, J. W. Zhang, Y. Y. Feng, T. C. Li, and L. J. Wang, “Precise and continuous time and frequency synchronization at the 5× 10-19 accuracy level,” Sci. Rep. 2(1), 556 (2012).

[Crossref]
[PubMed]

X. Xie, R. Bouchand, D. Nicolodi, M. Giunta, W. Hänsel, M. Lezius, A. Joshi, S. Datta, C. Alexandre, M. Lours, P. A. Tremblin, G. Santarelli, R. Holzwarth, and Y. Le Coq, “Photonic microwave signals with zeptosecond-level absolute timing noise,” Nat. Photonics 11(1), 44–47 (2017).

[Crossref]

C. L. Holloway, M. T. Simons, J. A. Gordon, P. F. Wilson, C. M. Cooke, D. A. Anderson, and G. Raithel, “Atom-based rf electric field metrology: From self-calibrated measurements to subwavelength and near-field imaging,” IEEE Trans. Electromagn. Compat. 59(2), 717–728 (2017).

[Crossref]

E. Rubiola, M. Olivier, and J. Groslambert, “Phase noise in the regenerative frequency dividers,” IEEE Trans. Instrum. Meas. 41(3), 353–360 (1992).

[Crossref]

X. Xie, R. Bouchand, D. Nicolodi, M. Giunta, W. Hänsel, M. Lezius, A. Joshi, S. Datta, C. Alexandre, M. Lours, P. A. Tremblin, G. Santarelli, R. Holzwarth, and Y. Le Coq, “Photonic microwave signals with zeptosecond-level absolute timing noise,” Nat. Photonics 11(1), 44–47 (2017).

[Crossref]

Y. Liu, T. Hao, W. Li, J. Capmany, N. Zhu, and M. Li, “Observation of parity-time symmetry in microwave photonics,” Light Sci. Appl. 7(1), 38 (2018).

[Crossref]

C. L. Holloway, M. T. Simons, J. A. Gordon, P. F. Wilson, C. M. Cooke, D. A. Anderson, and G. Raithel, “Atom-based rf electric field metrology: From self-calibrated measurements to subwavelength and near-field imaging,” IEEE Trans. Electromagn. Compat. 59(2), 717–728 (2017).

[Crossref]

X. Xie, R. Bouchand, D. Nicolodi, M. Giunta, W. Hänsel, M. Lezius, A. Joshi, S. Datta, C. Alexandre, M. Lours, P. A. Tremblin, G. Santarelli, R. Holzwarth, and Y. Le Coq, “Photonic microwave signals with zeptosecond-level absolute timing noise,” Nat. Photonics 11(1), 44–47 (2017).

[Crossref]

D. Jian, Z. Ziyan, Z. Yao, J. Liu, A. Liu, T. Zhang, F. Yin, Y. Zhou, Y. Liu, and K. Xu, “Stabilized Optoelectronic Oscillator With Enlarged Frequency-Drift Compensation Range,” IEEE Photonics Technol. Lett. 30(14), 1289–1292 (2018).

[Crossref]

T. M. Fortier, M. S. Kirchner, F. Quinlan, J. Taylor, J. C. Bergquist, T. Rosenband, N. Lemke, A. Ludlow, Y. Jiang, C. W. Oates, and S. A. Diddams, “Generation of ultra-stable microwaves via optical frequency division,” Nat. Photonics 5(7), 425–429 (2011).

[Crossref]

X. Xie, R. Bouchand, D. Nicolodi, M. Giunta, W. Hänsel, M. Lezius, A. Joshi, S. Datta, C. Alexandre, M. Lours, P. A. Tremblin, G. Santarelli, R. Holzwarth, and Y. Le Coq, “Photonic microwave signals with zeptosecond-level absolute timing noise,” Nat. Photonics 11(1), 44–47 (2017).

[Crossref]

D. Eliyahu, K. Sariri, A. Kamran, and M. Tokhmakhian, “Improving short and long term frequency stability of the optoelectronic oscillator,” in proceeding of IEEE Conference on International Frequency Control Symposium and PDA Exhibition Jointly (2002), pp. 580–583.

W. Roh, J. Y. Seol, J. Park, B. Lee, Y. Kim, and F. Aryanfar, “Millimeter-wave beamforming as an enabling technology for 5G cellular communications: Theoretical feasibility and prototype results,” IEEE Commun. Mag. 52(2), 106–113 (2014).

[Crossref]

T. M. Fortier, M. S. Kirchner, F. Quinlan, J. Taylor, J. C. Bergquist, T. Rosenband, N. Lemke, A. Ludlow, Y. Jiang, C. W. Oates, and S. A. Diddams, “Generation of ultra-stable microwaves via optical frequency division,” Nat. Photonics 5(7), 425–429 (2011).

[Crossref]

X. Xie, R. Bouchand, D. Nicolodi, M. Giunta, W. Hänsel, M. Lezius, A. Joshi, S. Datta, C. Alexandre, M. Lours, P. A. Tremblin, G. Santarelli, R. Holzwarth, and Y. Le Coq, “Photonic microwave signals with zeptosecond-level absolute timing noise,” Nat. Photonics 11(1), 44–47 (2017).

[Crossref]

W. Roh, J. Y. Seol, J. Park, B. Lee, Y. Kim, and F. Aryanfar, “Millimeter-wave beamforming as an enabling technology for 5G cellular communications: Theoretical feasibility and prototype results,” IEEE Commun. Mag. 52(2), 106–113 (2014).

[Crossref]

T. M. Fortier, M. S. Kirchner, F. Quinlan, J. Taylor, J. C. Bergquist, T. Rosenband, N. Lemke, A. Ludlow, Y. Jiang, C. W. Oates, and S. A. Diddams, “Generation of ultra-stable microwaves via optical frequency division,” Nat. Photonics 5(7), 425–429 (2011).

[Crossref]

X. Xie, R. Bouchand, D. Nicolodi, M. Giunta, W. Hänsel, M. Lezius, A. Joshi, S. Datta, C. Alexandre, M. Lours, P. A. Tremblin, G. Santarelli, R. Holzwarth, and Y. Le Coq, “Photonic microwave signals with zeptosecond-level absolute timing noise,” Nat. Photonics 11(1), 44–47 (2017).

[Crossref]

X. Xu, J. Dai, Y. Dai, F. Yin, Y. Zhou, J. Li, J. Yin, Q. Wang, and K. Xu, “Broadband and wide-range feedback tuning scheme for phase-locked loop stabilization of tunable optoelectronic oscillators,” Opt. Lett. 40(24), 5858–5861 (2015).

[Crossref]
[PubMed]

Y. Liu, T. Hao, W. Li, J. Capmany, N. Zhu, and M. Li, “Observation of parity-time symmetry in microwave photonics,” Light Sci. Appl. 7(1), 38 (2018).

[Crossref]

B. Wang, C. Gao, W. Chen, J. Miao, X. Zhu, Y. Bai, J. W. Zhang, Y. Y. Feng, T. C. Li, and L. J. Wang, “Precise and continuous time and frequency synchronization at the 5× 10-19 accuracy level,” Sci. Rep. 2(1), 556 (2012).

[Crossref]
[PubMed]

Y. Liu, T. Hao, W. Li, J. Capmany, N. Zhu, and M. Li, “Observation of parity-time symmetry in microwave photonics,” Light Sci. Appl. 7(1), 38 (2018).

[Crossref]

X. Xu, J. Wu, T. G. Nguyen, T. Moein, S. T. Chu, B. E. Little, R. Morandotti, A. Mitchell, and D. J. Moss, “Photonic microwave true time delays for phased array antennas using a 49 GHz FSR integrated optical micro-comb source,” Photon. Res. 6(5), B30–B36 (2018).

[Crossref]

D. Jian, Z. Ziyan, Z. Yao, J. Liu, A. Liu, T. Zhang, F. Yin, Y. Zhou, Y. Liu, and K. Xu, “Stabilized Optoelectronic Oscillator With Enlarged Frequency-Drift Compensation Range,” IEEE Photonics Technol. Lett. 30(14), 1289–1292 (2018).

[Crossref]

D. Jian, Z. Ziyan, Z. Yao, J. Liu, A. Liu, T. Zhang, F. Yin, Y. Zhou, Y. Liu, and K. Xu, “Stabilized Optoelectronic Oscillator With Enlarged Frequency-Drift Compensation Range,” IEEE Photonics Technol. Lett. 30(14), 1289–1292 (2018).

[Crossref]

X. Zou, S. Zhang, H. Wang, H. Wang, X. Zhang, Y. Zhang, S. Liu, and Y. Liu, “Stepwise Frequency-Shifted Optical Heterodyne for Flexible and Ultra-wide Frequency Microwave Down-Conversion,” IEEE Trans. Microw. Theory Tech. 66(7), 3557–3563 (2018).

[Crossref]

X. Zou, S. Zhang, H. Wang, H. Wang, X. Zhang, Y. Zhang, S. Liu, and Y. Liu, “Stepwise Frequency-Shifted Optical Heterodyne for Flexible and Ultra-wide Frequency Microwave Down-Conversion,” IEEE Trans. Microw. Theory Tech. 66(7), 3557–3563 (2018).

[Crossref]

D. Jian, Z. Ziyan, Z. Yao, J. Liu, A. Liu, T. Zhang, F. Yin, Y. Zhou, Y. Liu, and K. Xu, “Stabilized Optoelectronic Oscillator With Enlarged Frequency-Drift Compensation Range,” IEEE Photonics Technol. Lett. 30(14), 1289–1292 (2018).

[Crossref]

Y. Liu, T. Hao, W. Li, J. Capmany, N. Zhu, and M. Li, “Observation of parity-time symmetry in microwave photonics,” Light Sci. Appl. 7(1), 38 (2018).

[Crossref]

X. Xie, R. Bouchand, D. Nicolodi, M. Giunta, W. Hänsel, M. Lezius, A. Joshi, S. Datta, C. Alexandre, M. Lours, P. A. Tremblin, G. Santarelli, R. Holzwarth, and Y. Le Coq, “Photonic microwave signals with zeptosecond-level absolute timing noise,” Nat. Photonics 11(1), 44–47 (2017).

[Crossref]

T. M. Fortier, M. S. Kirchner, F. Quinlan, J. Taylor, J. C. Bergquist, T. Rosenband, N. Lemke, A. Ludlow, Y. Jiang, C. W. Oates, and S. A. Diddams, “Generation of ultra-stable microwaves via optical frequency division,” Nat. Photonics 5(7), 425–429 (2011).

[Crossref]

L. Maleki, “The optoelectronic oscillator,” Nat. Photonics 5(12), 728–730 (2011).

[Crossref]

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[Crossref]

D. Eliyahu, D. Seidel, and L. Maleki, “Phase noise of a high performance OEO and an ultra-low noise floor cross-correlation microwave photonic homodyne system,” in proceeding of IEEE Conference on International Frequency Control Symposium (2008), pp. 811–814.

[Crossref]

B. Wang, C. Gao, W. Chen, J. Miao, X. Zhu, Y. Bai, J. W. Zhang, Y. Y. Feng, T. C. Li, and L. J. Wang, “Precise and continuous time and frequency synchronization at the 5× 10-19 accuracy level,” Sci. Rep. 2(1), 556 (2012).

[Crossref]
[PubMed]

X. Xu, J. Wu, T. G. Nguyen, T. Moein, S. T. Chu, B. E. Little, R. Morandotti, A. Mitchell, and D. J. Moss, “Photonic microwave true time delays for phased array antennas using a 49 GHz FSR integrated optical micro-comb source,” Photon. Res. 6(5), B30–B36 (2018).

[Crossref]

X. Xu, J. Wu, T. G. Nguyen, T. Moein, S. T. Chu, B. E. Little, R. Morandotti, A. Mitchell, and D. J. Moss, “Photonic microwave true time delays for phased array antennas using a 49 GHz FSR integrated optical micro-comb source,” Photon. Res. 6(5), B30–B36 (2018).

[Crossref]

X. Xu, J. Wu, T. G. Nguyen, T. Moein, S. T. Chu, B. E. Little, R. Morandotti, A. Mitchell, and D. J. Moss, “Photonic microwave true time delays for phased array antennas using a 49 GHz FSR integrated optical micro-comb source,” Photon. Res. 6(5), B30–B36 (2018).

[Crossref]

X. Xu, J. Wu, T. G. Nguyen, T. Moein, S. T. Chu, B. E. Little, R. Morandotti, A. Mitchell, and D. J. Moss, “Photonic microwave true time delays for phased array antennas using a 49 GHz FSR integrated optical micro-comb source,” Photon. Res. 6(5), B30–B36 (2018).

[Crossref]

X. Xu, J. Wu, T. G. Nguyen, T. Moein, S. T. Chu, B. E. Little, R. Morandotti, A. Mitchell, and D. J. Moss, “Photonic microwave true time delays for phased array antennas using a 49 GHz FSR integrated optical micro-comb source,” Photon. Res. 6(5), B30–B36 (2018).

[Crossref]

X. Xie, R. Bouchand, D. Nicolodi, M. Giunta, W. Hänsel, M. Lezius, A. Joshi, S. Datta, C. Alexandre, M. Lours, P. A. Tremblin, G. Santarelli, R. Holzwarth, and Y. Le Coq, “Photonic microwave signals with zeptosecond-level absolute timing noise,” Nat. Photonics 11(1), 44–47 (2017).

[Crossref]

T. M. Fortier, M. S. Kirchner, F. Quinlan, J. Taylor, J. C. Bergquist, T. Rosenband, N. Lemke, A. Ludlow, Y. Jiang, C. W. Oates, and S. A. Diddams, “Generation of ultra-stable microwaves via optical frequency division,” Nat. Photonics 5(7), 425–429 (2011).

[Crossref]

E. Rubiola, M. Olivier, and J. Groslambert, “Phase noise in the regenerative frequency dividers,” IEEE Trans. Instrum. Meas. 41(3), 353–360 (1992).

[Crossref]

W. Roh, J. Y. Seol, J. Park, B. Lee, Y. Kim, and F. Aryanfar, “Millimeter-wave beamforming as an enabling technology for 5G cellular communications: Theoretical feasibility and prototype results,” IEEE Commun. Mag. 52(2), 106–113 (2014).

[Crossref]

T. M. Fortier, M. S. Kirchner, F. Quinlan, J. Taylor, J. C. Bergquist, T. Rosenband, N. Lemke, A. Ludlow, Y. Jiang, C. W. Oates, and S. A. Diddams, “Generation of ultra-stable microwaves via optical frequency division,” Nat. Photonics 5(7), 425–429 (2011).

[Crossref]

C. L. Holloway, M. T. Simons, J. A. Gordon, P. F. Wilson, C. M. Cooke, D. A. Anderson, and G. Raithel, “Atom-based rf electric field metrology: From self-calibrated measurements to subwavelength and near-field imaging,” IEEE Trans. Electromagn. Compat. 59(2), 717–728 (2017).

[Crossref]

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[Crossref]

W. Roh, J. Y. Seol, J. Park, B. Lee, Y. Kim, and F. Aryanfar, “Millimeter-wave beamforming as an enabling technology for 5G cellular communications: Theoretical feasibility and prototype results,” IEEE Commun. Mag. 52(2), 106–113 (2014).

[Crossref]

T. M. Fortier, M. S. Kirchner, F. Quinlan, J. Taylor, J. C. Bergquist, T. Rosenband, N. Lemke, A. Ludlow, Y. Jiang, C. W. Oates, and S. A. Diddams, “Generation of ultra-stable microwaves via optical frequency division,” Nat. Photonics 5(7), 425–429 (2011).

[Crossref]

E. Rubiola, M. Olivier, and J. Groslambert, “Phase noise in the regenerative frequency dividers,” IEEE Trans. Instrum. Meas. 41(3), 353–360 (1992).

[Crossref]

X. Xie, R. Bouchand, D. Nicolodi, M. Giunta, W. Hänsel, M. Lezius, A. Joshi, S. Datta, C. Alexandre, M. Lours, P. A. Tremblin, G. Santarelli, R. Holzwarth, and Y. Le Coq, “Photonic microwave signals with zeptosecond-level absolute timing noise,” Nat. Photonics 11(1), 44–47 (2017).

[Crossref]

D. Eliyahu, K. Sariri, A. Kamran, and M. Tokhmakhian, “Improving short and long term frequency stability of the optoelectronic oscillator,” in proceeding of IEEE Conference on International Frequency Control Symposium and PDA Exhibition Jointly (2002), pp. 580–583.

D. Eliyahu, D. Seidel, and L. Maleki, “Phase noise of a high performance OEO and an ultra-low noise floor cross-correlation microwave photonic homodyne system,” in proceeding of IEEE Conference on International Frequency Control Symposium (2008), pp. 811–814.

[Crossref]

W. Roh, J. Y. Seol, J. Park, B. Lee, Y. Kim, and F. Aryanfar, “Millimeter-wave beamforming as an enabling technology for 5G cellular communications: Theoretical feasibility and prototype results,” IEEE Commun. Mag. 52(2), 106–113 (2014).

[Crossref]

C. L. Holloway, M. T. Simons, J. A. Gordon, P. F. Wilson, C. M. Cooke, D. A. Anderson, and G. Raithel, “Atom-based rf electric field metrology: From self-calibrated measurements to subwavelength and near-field imaging,” IEEE Trans. Electromagn. Compat. 59(2), 717–728 (2017).

[Crossref]

T. M. Fortier, M. S. Kirchner, F. Quinlan, J. Taylor, J. C. Bergquist, T. Rosenband, N. Lemke, A. Ludlow, Y. Jiang, C. W. Oates, and S. A. Diddams, “Generation of ultra-stable microwaves via optical frequency division,” Nat. Photonics 5(7), 425–429 (2011).

[Crossref]

D. Eliyahu, K. Sariri, A. Kamran, and M. Tokhmakhian, “Improving short and long term frequency stability of the optoelectronic oscillator,” in proceeding of IEEE Conference on International Frequency Control Symposium and PDA Exhibition Jointly (2002), pp. 580–583.

X. Xie, R. Bouchand, D. Nicolodi, M. Giunta, W. Hänsel, M. Lezius, A. Joshi, S. Datta, C. Alexandre, M. Lours, P. A. Tremblin, G. Santarelli, R. Holzwarth, and Y. Le Coq, “Photonic microwave signals with zeptosecond-level absolute timing noise,” Nat. Photonics 11(1), 44–47 (2017).

[Crossref]

B. Wang, C. Gao, W. Chen, J. Miao, X. Zhu, Y. Bai, J. W. Zhang, Y. Y. Feng, T. C. Li, and L. J. Wang, “Precise and continuous time and frequency synchronization at the 5× 10-19 accuracy level,” Sci. Rep. 2(1), 556 (2012).

[Crossref]
[PubMed]

X. Zou, S. Zhang, H. Wang, H. Wang, X. Zhang, Y. Zhang, S. Liu, and Y. Liu, “Stepwise Frequency-Shifted Optical Heterodyne for Flexible and Ultra-wide Frequency Microwave Down-Conversion,” IEEE Trans. Microw. Theory Tech. 66(7), 3557–3563 (2018).

[Crossref]

X. Zou, S. Zhang, H. Wang, H. Wang, X. Zhang, Y. Zhang, S. Liu, and Y. Liu, “Stepwise Frequency-Shifted Optical Heterodyne for Flexible and Ultra-wide Frequency Microwave Down-Conversion,” IEEE Trans. Microw. Theory Tech. 66(7), 3557–3563 (2018).

[Crossref]

B. Wang, C. Gao, W. Chen, J. Miao, X. Zhu, Y. Bai, J. W. Zhang, Y. Y. Feng, T. C. Li, and L. J. Wang, “Precise and continuous time and frequency synchronization at the 5× 10-19 accuracy level,” Sci. Rep. 2(1), 556 (2012).

[Crossref]
[PubMed]

X. Xu, J. Dai, Y. Dai, F. Yin, Y. Zhou, J. Li, J. Yin, Q. Wang, and K. Xu, “Broadband and wide-range feedback tuning scheme for phase-locked loop stabilization of tunable optoelectronic oscillators,” Opt. Lett. 40(24), 5858–5861 (2015).

[Crossref]
[PubMed]

C. L. Holloway, M. T. Simons, J. A. Gordon, P. F. Wilson, C. M. Cooke, D. A. Anderson, and G. Raithel, “Atom-based rf electric field metrology: From self-calibrated measurements to subwavelength and near-field imaging,” IEEE Trans. Electromagn. Compat. 59(2), 717–728 (2017).

[Crossref]

X. Xu, J. Wu, T. G. Nguyen, T. Moein, S. T. Chu, B. E. Little, R. Morandotti, A. Mitchell, and D. J. Moss, “Photonic microwave true time delays for phased array antennas using a 49 GHz FSR integrated optical micro-comb source,” Photon. Res. 6(5), B30–B36 (2018).

[Crossref]

X. Xie, R. Bouchand, D. Nicolodi, M. Giunta, W. Hänsel, M. Lezius, A. Joshi, S. Datta, C. Alexandre, M. Lours, P. A. Tremblin, G. Santarelli, R. Holzwarth, and Y. Le Coq, “Photonic microwave signals with zeptosecond-level absolute timing noise,” Nat. Photonics 11(1), 44–47 (2017).

[Crossref]

D. Jian, Z. Ziyan, Z. Yao, J. Liu, A. Liu, T. Zhang, F. Yin, Y. Zhou, Y. Liu, and K. Xu, “Stabilized Optoelectronic Oscillator With Enlarged Frequency-Drift Compensation Range,” IEEE Photonics Technol. Lett. 30(14), 1289–1292 (2018).

[Crossref]

X. Xu, J. Dai, Y. Dai, F. Yin, Y. Zhou, J. Li, J. Yin, Q. Wang, and K. Xu, “Broadband and wide-range feedback tuning scheme for phase-locked loop stabilization of tunable optoelectronic oscillators,” Opt. Lett. 40(24), 5858–5861 (2015).

[Crossref]
[PubMed]

X. Xu, J. Wu, T. G. Nguyen, T. Moein, S. T. Chu, B. E. Little, R. Morandotti, A. Mitchell, and D. J. Moss, “Photonic microwave true time delays for phased array antennas using a 49 GHz FSR integrated optical micro-comb source,” Photon. Res. 6(5), B30–B36 (2018).

[Crossref]

X. Xu, J. Dai, Y. Dai, F. Yin, Y. Zhou, J. Li, J. Yin, Q. Wang, and K. Xu, “Broadband and wide-range feedback tuning scheme for phase-locked loop stabilization of tunable optoelectronic oscillators,” Opt. Lett. 40(24), 5858–5861 (2015).

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