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1. F. J. Fraile-Peláez and G. Assanto: «Coupled-Mode Equations for Nonlinear Directional Couplers». Applied Optics. Vol. 29, p. 2216-2217 (1990).
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2. F. J. Fraile-Peláez, G. Assanto and D.R. Heatly: «Sign-Dependent Response of Nonlinear Directional Couplers». Optics Communications. Vol. 77, p. 402-406 (1990).
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3. F. J. Fraile-Peláez and G. Assanto: «Improved Coupled-Mode Analysis of Nonlinear Distributed Feedback Structures». Optical and Quantum Electronics. Vol. 23, p. 633-637 (1991).
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4. F.J. Fraile-Peláez, J. Capmany, and M.A. Muriel: «Transmission Bistability in a Double Coupler Fiber Ring Resonator». Optics Letters. Vol. 16, p. 907-909 (1991).
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5. J. Capmany, M.A. Muriel, and F.J. Fraile-Peláez: «Optical Differential Amplification in Nonlinear Fibre Ring Resonator». Electronics Letters. Vol. 27, p. 1810-1811 (1991).
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6. F.J. Fraile-Peláez and J. Capmany: «Effect of Pulse Propagation on the Modal Field Profiles of Dielectric and Metallic Waveguides». Microwave and Optical Technology Letters. Vol. 4, p. 589-591 (1991).
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7. F.J. Fraile-Peláez: «An Intuitive Way to Teach the Electromagnetic Interaction in Anisotropic Dielectrics». IEEE Trans. on Education. Vol. 35, p. 296-299 (1992).
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8. F.J. Fraile-Peláez and F. Gil-Vázquez: «Combined Effect of Harmonic Distortion and Pulse Dispersion in Optical Fiber Transmission». Microwave and Optical Technology Letters. Vol. 6, p. 205-208 (1993).
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9. F.J. Fraile-Peláez, J. Capmany, and M. A. Muriel: «Low Threshold Optical Amplification Using a Nonlinear Ring Resonator». Electronics Letters. Vol. 29, p. 1249-1251 (1993).
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10. F.J. Fraile-Peláez, M. Prol, D.J. Santos, and J.M. Soto-Crespo: «Transient Analysis of a Nonlinear Fiber Ring Resonator». Applied Physics Letters. Vol. 63, p. 1477-1479 (1993).
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11. J. Capmany, F.J. Fraile-Peláez and M. A. Muriel: «Optical Bistability and Differential Amplification in Nonlinear Fiber Resonators». IEEE J. Quantum Electronics. Vol. 30, p. 2578-2588 (1994).
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12. P. Chamorro-Posada, R. Gomez-Alcala, and F. J. Fraile-Pelaez: «Modal Analysis of Optical Waveguides using Prony’s Method and BPM». Microwave and Optical Technology Letters. Vol. 7, p. 529-532 (1994).
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13. P. Chamorro-Posada and F. J. Fraile-Pelaez: «Integrated Waveguide-Photodetector Coupling by Modal Fitting». Microwave and Optical Technology Letters. Vol. 7, p. 795-798 (1994).
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14. P. Chamorro-Posada, and F. J. Fraile-Pelaez: «Volume Integral Formulation of FD-BPM for Studying Planar Optical Waveguides». Journal of Modern Optics. Vol. 42, p. 491-496 (1995).
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15. M. Prol, F.J. Fraile-Peláez, R. Gómez-Alcalá, P. Chamorro, and D.J. Santos: «Instability and Chaos in a Two-Coupler Fiber Ring Resonator». Fiber & Integrated Optics. Vol 14, p. 331-335 (1995).
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16. D.J. Santos, R. Gómez-Alcalá, F.J. Fraile-Peláez, and M. Prol: «Quantum Noise Analysis of an Amplifying TCRR Using a Continuous Mode Formalism». Fiber & Integrated Optics. Vol 14, p. 287-294 (1995).
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17. R. Gómez-Alcalá, C. Mejuto, F.J. Fraile-Peláez, and I. Esquivias: «Valence Bandstructure of Disordered Quantum Wells». Superlattices and Microstructures. Vol 17, p. 277-284 (1995).
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18. R. Gómez-Alcalá, F.J. Fraile-Peláez, A. Espiñeira, and X. Piñeiro: «Effective-Mass Approaches for One-Dimensional Quantum Well Structures. Comparison with Multiband Results». Superlattices and Microstructures. Vol 20, No. 1, 35-44 (1996).
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19. D. J. Santos, A. Seoane, and F.J. Fraile-Peláez: «Transient Analysis of a Nonlinear Ring Resonator Operating as an Optical Oscillator». Microwave and Optical Technology Letters. Vol 13, 102-105, (1996).
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20. D. J. Santos, R. Loudon, and F.J. Fraile-Peláez: «Continuum States and Fields in Quantum Optics». American Journal of Physics. Vol. 65, 126-132, (1997).
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21. F.J. Fraile-Peláez, D. Santos, and J. Capmany: «Photonic Excess Noise in a p-i-n Photodetector». Optics Communications. Vol. 135, 37-40 (1997).
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22. F.J. Fraile-Peláez and P. Chamorro-Posada: «Conceptual Difficulties in the Teaching of the Photodetection Process». Int. J. Electrical Education, Vol. 35, no. 4 (1998).
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23. David J. Santos and F.J. Fraile-Peláez: «Bit Rate Influence on Shot Noise in Digital Optical Receivers». Microwave and Optical Technology Letters, Vol. 18, 349-350 (1998)
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24. P. Chamorro-Posada, G. S. McDonald, G.H.C. New, and F. J. Fraile-Peláez: «Fast Algorithm for Studying the Evolution of Optical Solitons under Perturbations». IEEE Trans. on Magnetics, vol. 35, 1558-1561 (1999)
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25. David J. Santos and F.J. Fraile-Peláez: «Pulse Normalization in Optical Receiver Shot-Noise Performance». IEE Proc. Optoelectronics, vol. 146, 201-203 (1999).
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26. P. Chamorro-Posada, F.J. Fraile-Peláez, R. Gómez-Alcalá, and D. Pastor: «Performance Analysis of Optical Prefiltering-SCM Systems by Accurate Spectral Techniques». IEEE Photonics Tech. Lett., vol. 12, 85-87 (2000).
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27. F.J. Fraile-Peláez: «Treatments of Quantum Electromagnetic Interaction: Pedagogical and Conceptual Problems». European Journal of Physics, vol. 22, 287-303 (2001).
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28. M. Prol, A. Moredo-Araújo, F.J. Fraile-Peláez, and R. Gómez-Alcalá: «Accurate Validation of Experimental Results of Interdiffused InGaAs/GaAs Strained Quantum Wells by Suitable Numerical Methods». Superlattices and Microstructures, vol. 30, 61-67 (2001).
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29. F. J. Fraile-Peláez: «Analytical Signal Formalism in the Description of Optical Pulse Photodetection.» Microwave and Optical Technology Letters, vol. 37, no. 5, 347-352 (2003).
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30. R. Gómez, A. Dengra, and F. J. Fraile-Peláez: «Analysis of a Fiber Laser with Two Nonlinear Amplifying-Loop Mirrors.» Fiber and Integrated Optics, vol. 23, no. 2-3, 201-206 (2004).
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31. F. J. Fraile-Peláez, A. Librán, and. M. A. Prol: «Spatial effects in the linear propagation of drastically ultrashort optical pulses in single-mode waveguides.» Optical & Quantum Electronics, vol. 37, 611-624 (2005).
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32. F. J. Fraile-Peláez and P. Chamorro-Posada: «Active control and stability in microring resonator chains». Optics Express, vol. 15, 6, pp. 3177-3189 (2007).
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33. P. Chamorro-Posada and F.J. Fraile-Pelaez: «Superluminal propagation in resonant dissipative media». Optics Communications 282, pp.1095-1098 (2009).
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34. P. Chamorro-Posada and F. J. Fraile-Pelaez: «Fast and slow light in zig-zag microring resonator chains». Optics Letters 34, 1095-1098 (2009).
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35. P. Chamorro-Posada, F. J. Fraile-Pelaez, and F. J. Diaz-Otero: «Micro-Ring Chains with High-Order Resonances». J. Lightwave Technol. Vol. 29, nº 10, pp. 1514-1521 (2011).
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36. P.Chamorro-Posada, J.Sánchez-Curto, J.C.García-Escartín, F.J.Díaz-Otero, P.Martín-Ramos, J.Martín-Gil, L.M.Navas-Gracia, F.J.Fraile-Peláez, G.S.McDonald, J.M.Christian, “Research on nonlinear and quantum optics at the Photonics and Quantum Information Group of the University of Valladolid”, Óptica Pura y Aplicada, Vol. 44, N 2, 211-217, 2011. ISSN: 0030-3917 (2011).
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37. R. Gómez-Alcala, F. J. Fraile-Peláez, F. J. Díaz-Otero, “Modeling of Racetrack-Resonator ADD-DROP Filters with Arbitrary Nonlinear Directional Couplers”, Optics Letters, ISSN: 0146-9592, Vol 37, N11, pp. 2097-2099 (2012). DOI: http://dx.doi.org/10.1364/OL.37.002097
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38. F. J. Fraile-Peláez, P. Chamorro-Posada, and R. Gómez-Alcalá, «Racetrack Add-Drop Resonator with an Organic Cover for Nonlinear Switching Enhancement», J. Nonlinear Optic. Phys. Mat. 21, 1250030 (2012) [9 pages] DOI: 10.1142/S0218863512500300.
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39. P. Chamorro-Posada, R. Gómez-Alcalá, and F. J. Fraile-Peláez, «Study of Optimal All-Pass Microring Resonator Delay Lines With a Genetic Algorithm,» Journal of Lightwave Technology 32, nº 8, pp. 1477-1481, ISSN: 0733-8724 (2014)
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40. P. Chamorro-Posada and F. J. Fraile-Peláez, «Phase Asymmetry Effect in Longitudinal Offset Coupled Resonator Optical Waveguides,» IEEE Photonics Technology Letters, vol. 26, nº 15 , pp. 1489-1491 ISSN: 1041-1135 (2014)
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41. Pedro Chamorro-Posada, F. Javier Fraile-Peláez, “Group Delay Control in Longitudinal Offset Coupled Resonator Optical Waveguides”, Journal of Lightwave Technology, Vol. 33, Issue 9, pp. 1703-1707 (2015)
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42. F. Javier Fraile-Pelae, “Can an “impulse response” really be defined for a photoreceiver?”, Optics Communications 354, pp. 197–201 (2015)
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43. José Vázquez-Cabo, Pedro Chamorro-Posada, F. Javier Fraile-Peláez, Óscar Rubiños-López, José M. López-Santos, Pablo Martín-Ramos, «Windowing of THz time-domain spectroscopy signals: A study based on lactose», Optics Communications, Vol 366, pp. 386-396. 01/05/2016.
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44. Andrés Macho, Carlos García Meca, F. Javier Fraile Peláez, Maria Morant, Roberto Llorente, “Birefringence effects in multi-core fiber: coupled local-mode theory”, Optics Express, Vol. 24, nº 19, pp. 21415-21434, 19/09/16.
http://dx.doi.org/10.1364/OE.24.021415. ISSN 1094-4087
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45. David Doménech, Pedro Chamorro Posada, Francisco J. Fraile Peláez, María José Erro, Santiago Tainta Ausejo, Miguel A. Muriel, Rocío Baños, Jens Bolten, Herbert Kleinjans, «Characterization of Microring Filters for Differential Group Delay Applications», Journal Of Lightwave Technology, Vol. 35, Nº. 14, pp. 2943-2947, ISSN 0733-8724, Digital Object Indentifier: 10.1109/JLT.2017.2707478, July 15, 2017.
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46. Javier Madrigal, F. Javier Fraile-Peláez, Di Zheng, David Barrera, and Salvador Sales»Characterization of a FBG sensor interrogation system based on a mode-locked laser scheme», Optics Express, Volumen 25, pp. 24650-24657, 2017. ISSN 1094-4087.
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47. Daniel Perez, Ivana Gasulla, F. Javier Fraile-Pelaez, Lee Crudgington, David J. Thomson, Ali Z. Khokhar, Ke Li, Wei Cao, Goran Z. Mashanovich, Jose Capmany, «Silicon photonics rectangular universal interferometer», Laser & Photonics Reviews, Vol. 11, 1700219 (2017). DOI:
https://doi.org/10.1002/lpor.201700219
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48. Andrés Macho, Carlos García-Meca, Javier Fraile-Pelaez, Frederic Cortés-Juan, Roberto Llorente: «Ultra-short pulse propagation model for multi-core fibers based on local modes». Scientific Reports. Vol. 7 (2017). DOI:
10.1038/s41598-017-16691-w.
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49. Mario Ureña, Ivana Gasulla, Francisco Javier Fraile, Jose Capmany, “Modeling optical fiber space division multiplexed quantum key distribution systems”, Optics Express, vol. 27, nº 5, pp. 7047-7063 (2019). DOI:
https://doi.org/10.1364/OE.27.007047