V. Ahmadi, S. Noda, and A. Sasaki, "Optical Multi stable Set-Reset Functional Integrated Device Composed of Six Heterojunction Phototransistors and Two Laser Diodes,” Solid State Electronic, Vol. 38, No.3, PP. 551-558, 1995.
V. Ahmadi, S. Noda, and A. Sasaki, "2-D Simulation and New Structure of HPT for Integrated Device in Optoelectronic Integrated Devices,” Optical Review, Vol. 2, No. 2, PP. 120-122, 1995.
V. Ahmadi, S. Noda, and A. Sasaki, "Analysis for Relative Intensity Noise of Optoelectronic Integrated Device by Heterojunction Phototransistor and Laser Diode,” Solid State Electronics, Vol. 41, No. 3, PP. 465-471, 1997.
V. Ahmadi, H.H. Sheikhi, M.K. Moravvej, "Numerical Analysis for Static and Dynamic characteristics of an Optical Amplifier-Switch,” Scripta Materialia, Vol. 44, No. 59, PP. 1207-1212, 2001.
M. Joodaki, G. Kompa, V. Ahmadi, M. K. Moravvej," Using Neural Network for High Resolution Distance Measurement in PLR." SPIE Proc., Vol. 4471, PP. 180-189, 2001.
M. K. Moravvej, A. Zarifkar, V. Ahmadi, “Analysis of the Noise in Single Mode Semiconductor Laser Diodes,” Amir-Kabir Scientific and Research J., Vol. 48, PP. 449-437, 2001(in Persian).
A. Banoushi, V. Ahmadi, S. Setayeshi, "An Analytical Approach to Study the Effect of Carrier Velocities on the Gain and Break down Voltage of APD,” IEEE J. of Light Wave Tech., Vol. 20, No. 4, PP. 696-699, 2002.
F. Shahshahani, V. Ahmadi, K. Mirabbaszadeh, "Concave Tapered Grating Design of DFB Laser at High Power Operation for Reduced Spatial Hole-Burning Effect,” Material Science Engineering B, Vol. B96, PP. 1-7, 2002.
M. H. Sheikhi, V. Ahmadi, M. K. Moravvej, "A Physical Model for Characteristics of an Optical Amplifier-switch Integrated Device,” Iranian J. of Science & Technology, Trans. B, Vol. 26, No. B4, 665- 673, 2002.
E. Mortazy, V. Ahmadi, M. K. Moravvej, "An Integrated Equivalent Circuit Model for Relative Intensity Noise and Frequency Noise Spectrum of a Multimode Semiconductor Laser ,” IEEE J. Quantum Electronics Vol. 38, No. 10, PP. 1366-1371, 2002.
F. Emami, M. K. Moravvej, V. Ahmadi, “Analysis of Grating Dimensions on Ridge Waveguide DFB-LD Characteristics,” Int. Journal of Engineering, University of Science & Eng., Vol. 13, No. 3, PP. 21-32, 2002 (in Persian).
A. Banoushi, V. Ahmadi, S. Setayeshi, "Frequency and Temporal Response of an SAM-APD,” Amir-Kabir Scientific and Research J., Vol. 53, PP. 122-130, 2002 (in Persian).
F. Shahshahani, V. Ahmadi, K. Mirabbaszadeh, "The Effects of Grating Phase and Facets Reflections on the Optical Field Inside Semiconductor QWS-DFB Laser Diode,” Modares Technical and Engineering Scientific Research J., No. 7, PP. 1-12, 2002 (in Persian).
V. Ahmadi, E. Mortazy, A. Zarifkar, M. K. Moravvej, “Measurement and Analysis of Intensity and Phase Noise in Telecommunication Multimode Laser Diodes,” Amir-Kabir Scientific and Research J., Vol. 53, PP. 249-258, 2002 (in Persian).
K. Saghafi, M. K. Moravvej, V. Ahmadi, “An Improved Monte Carlo Method for Electron Transport in Low Electric Field for Degenerate Semiconductors,” Daneshvar, Scientific-Research Journal, PP. 1-10, March 2003 (in Persian).
E. Mortazy, V. Ahmadi, M. K. Moravvej, "Circuit Modeling and Measurement of Noise for Semiconductor Laser Diode,” J. of Faculty of Engineering, Tabriz University, Vol. 29, No. 1, 2003.
K. Saghafi, M. K. Moravvej, V. Ahmadi, “δ-Doped LDD MESFET with Heterostructure,” Modares Technical and Engineering Scientific Research J., Autumn, 99-103, 2003 (in Persian).
A. Zarifkar, M. K. Moravvej, V. Ahmadi, “Numerical Analysis for Side Mode Effects on the Noise Characteristics of Semiconductor Laser Diodes,” Int. Journal of Engineering, University of Science & Eng., Vol. 14, No. 1, PP. 23-44, 2003 (in Persian).
M. H. Sheikhi, V. Ahmadi, M, K. Moravvej, “Physical Modeling for Transient Response of Voltage-Tunable Optoelectronic Integrated Functional Device,” Physica Status Solidi (C), Vol. 0, No. 3, 961- 966, 2003..
E. Mortazy, F. Shahshahani, V. Ahmadi, A. Tehranchi, M. K. Moravvej, " The Effect of Grating Structure on Relative Intensity Noise in DFB Laser Diode", SPIE Proc. Vol. 5468, PP. 154-164, 2004.
K. Saghafi, M. K. Moravvej, V. Ahmadi, "The Effects of the Semiconductor Properties and MESFET Structure on Electron Transport Characteristics-Monte Carlo Analysis", Modares Technical and Engineering Scientific Research J., No. 22, PP. 11-22, 2005.
E. Darabi, V. Ahmadi, K. Mirabbaszadeh, " Numerical Analysis of an Optoelectronic Integrated Device Composed of Coupled Periodic MQW Phototransistor and Strained-QW Laser Diode", Solid State Electronics, Vol. 50, PP. 473-479, 2006.
G. Abaeiani, V. Ahmadi, K. Saghafi, " Design and Analysis of Resonant Cavity Enhanced-Waveguide Photodetector Microwave Photonic Applications," IEEE Photonics Technology Letter, Vol. 18, No. 15, PP. 1597-1599, 2006.
M. Razaghi, V. Ahmadi, and A. Zarifkar, “Dynamic Analysis of Semiconductor Laser Amplifier Using Transfer Matrix Method”, Modarres Technical and Engineering, No. 26, 2007.
K. Abedi, V. Ahmadi, E. Darabi, M. K. Moravvej, and M. H. Sheikhi," Design of a Novel Periodic Asymmetric Intra-Step-Barrier Coupled Double Strained Quantum Well Electroabsorption Modulator at 1.55 μm", Solid-State Electronics, Vol. 52, No. 2, pp. 312-322, 2008.
K. Abedi, V. Ahmadi, E. Darabi, M. K. Moravvej, "Numerical Analysis of Mushroom-type Traveling Wave Electroabsorption Modulators Using Full-Vectorial Finite Difference Method", International Journal of Optics and Photonics (IJOP), Vol. 2, No. 1, Winter 2008.
N. Bajdanzadeh, V. Ahmadi, F. Shashahani, and H. Ghafoorifard" Dynamic Response of QWS-DFB Lasers with Convex Tapered Grating Structure and Non-Zero Facet Reflection", Solid-State Electronics, Vol. 52, No. 2, pp. 221-226, 2008..
F. Shashahani and V. Ahmadi, “Analysis of Relative Intensity Noise in Tapered Grating QWS-DFB Laser Diodes by using Three Rate Equations Model”, Solid-State Electronics, Vol. 52, No. 2, pp. 857-862, 2008..
M. Dehghan and V. Ahmadi, “Opto-Electro-Thermal Model for MQW Laser Including Self-Heating and Chirping Effects”, IJCSNS International Journal of Computer Science and Network Security, Vol. 8, No. 3, pp. 88-91, 2008.
M. Dehghan and V. Ahmadi, "Investigation and analysis of time response in Geiger mode avalanche photodiode", Optica Applicata, Vol. XL, No. 2, pp.471-478, 2010.
W.O. Popoola and Z. Ghassemlooy and V. Ahmadi, “Performance of Sub-carrier modulated Free-Space Optical Communication Link in Negative Exponential Atmospheric Turbulence Environment”, Int. J. Autonomous and Adaptive Communications Systems, Vol. 1, No. 3, pp. 342-355, 2008.
S. Masudy-Panah and V. Ahmadi, “A Closed Form Analytic Model to Study the Characteristics of Avalanche Photodiodes”, J. of Modern Optics, Vol. 56, No. 1, pp. 67-72, 2009.
M. H. Yavari and V. Ahmadi, “Analysis of Three Section Distributed Bragg Reflector Tunable Laser Diode Based on the Transfer Matrix Method”, Modares Technical and Engineering, No. 34, pp. 1-12, 2009 (in Persian).
Gh. Tahmasebipour, Y. Hojjat, V. Ahmadi, A. Abdullah, “Optimization of STM/FIM nanotips aspect ratio based on the Taghuchi method”, Int. J. of Advance Manufacturing Technology, Vol. 44, pp. 80-90, 2009.
H. Aghajanpour, V. Ahmadi and M Razaghi, “Ultra-short optical pulse shaping using semiconductor optical amplifier”, Optics & Laser Technology, Vol. 41, No. 5, pp. 654-658, 2009.
M. Razaghi, V. Ahmadi, and M. Connelly, “Improved Finite-Difference Time Dependent Beam Propagation Scheme for Analyzing Counter Picosecond Pulse Propagation in Semiconductor Optical Amplifier”, IEEE J. of Lightwave Technology, Vol. 27, No. 15, pp. 3162-3174, 2009.
M. H. Yavari and V. Ahmadi, “Circuit Level Implementation of Semiconductor Self Assembled Quantum Dot Laser”, IEEE J. of Selected Topics in Quantum Electronics, Vol. 15, No. 3, pp. 774-779, 2009.
Gh. Tahmasebipour, Y. Hojjat, V. Ahmadi, A. Abullah, “Effect of Fabrication Process Parameters on the Apex-radius of STM Tungsten Nanotip”, Scanning, Vol. 31, pp. 65-74, 2009.
E. Darabi, V. Ahmadi, " Design and Numerical Analysis of a Polarization-Insensitive Quantum Well Optoelectronic Integrated Amplifier-Switch", Solid State Electronics, Vol. 53, No. 3, pp. 383-388, 2009.
M. Eskandari, V. Ahmadi and Sh. Ahmadi, “Low Temperature Synthesis of ZnO Nanorods by Using PVP and Their Characterization”, Physica B: Condensed Matter, Vol. 404, No. 14-15, pp. 1924-1928, 2009.
Gh. Tahmasebipour, V. Ahmadi, Y. Hojjat and A. Abdullah, “Fabrication of STM tungsten nanotip by electrochemical etching method”, International Journal of Nanoscience (IJN), Vol. 8, No. 3, pp. 305-310, 2009.
M. Eskandari, V. Ahmadi, Sh. Ahmadi, “Synthesis and characterization of ZnO nanorods and nanowires using PVP as capping”, International Journal of Nanoscience (IJN), Vol. 8, No. 3, pp. 285-287, 2009.
A. Mir and V. Ahmadi, " Design and analysis of a new structure of InAs/GaAs QDIP for 8-12 m infrared windows with low dark current", Journal of Modern Optics, Vol. 56, No. 15, pp. 1704–1712, 2009.
Kambiz Abedi, Vahid Ahmadi and M. K. Moravvej-Farshi, "Optical and microwave analysis of mushroom-type waveguides for traveling wave electroabsorption modulators based on asymmetric intra-step-barrier coupled double strained quantum wells by full-vectorial method", Optical And Quantum Electronics, Vol. 41, pp.719-733, 2009.
Mohammad Razaghi, Vahid Ahmadi and Michael J. Connelly, "Femtosecond pulse shaping using counter-propagating pulses in a semiconductor optical amplifier", Optical and Quantum Electronics, Vol. 41, pp. 513-523, 2009.
Gh. Tahmasebipour, Y. Hojjat, V. Ahmadi, A. Abdullah, “Optimization of Electrochemical Etching Parameters in FIM/STM Tungsten nanotip Fabrication”, Journal Sciences, I.R. Iran,Vol. 21(1), pp. 75-88, 2009.
Maryam Aliannezhadi, Fatemeh Shahshahani, and Vahid Ahmadi, "Dependence of coupling coefficient and lasing wavelength on injection current in pure gain-coupled distributed feedback semiconductor lasers", Journal of Modern Optics, Vol. 57, No. 10, pp. 859-865, 2010.
A. Chaman-Motlagh, V. Ahmadi and Z. Ghassemlooy, "A modified model of the atmospheric effects on the performance of FSO links employing single and multiple receivers", Journal of Modern Optics, Vol. 57, No. 1, pp. 37-42, 2010.
M. Eskandari, V. Ahmadi and Sh. Ahmadi, “Growth of Al-doped ZnO nanorod arrays on the substrate at low temperature”, Physica E: Low-dimensional Systems and Nanostructures, Vol. 42, pp. 1683–1686, 2010.
B. Abdollahi Nejand, S. Sanjabi, V. Ahmadi, "The effect of sputtering gas pressure on structure and photocatalytic properties of nanostructured titanium oxide self-cleaning thin film" Vacuum, Vol. 85, pp. 400-405, 2010.
B. Abdollahi Nejand, S. Sanjabi, V. Ahmadi, "Optical and photocatalytic characteristics of nitrogen doped TiO2 thin film deposited by magnetron sputtering", Scientian Iranica, Transaction F, Vol. 17, No. 2, pp. 102-107, December 2010.
Hossein Reza Yousefvand and Vahid Ahmadi, and Kamyar Saghafi, "Static and dynamic response analysis of Raman injection quantum cascade laser using circuit level modeling", J. of Lightwave Technology Vol. 28, No. 21, pp. 3142-3148, 2010.
Mojtaba Gandomkar and Vahid Ahmadi, "Design and analysis of enhanced second harmonic generation in AlGaAs/AlOx microring waveguide", Optics Express, Vol. 19, No. 10, 9408-9418, 2011.
M. Eskandari, N. Haghighi, V. Ahmadi, F. Haghighi, SH. R. Mohammadi, "Growth and investigation of antifungal properties of ZnO nanorod arrays on the glass" Physica B, Vol. 406, pp. 112–114, 2011.
Mojtaba Gandomkar1 and Vahid Ahmadi, "Thermo-optical switching enhanced with second harmonic generation in microring resonators", Optics Letters, Vol. 36, pp. 3825-3827, 2011.
Mitra Hosseinifar, Vahid Ahmadi, and Gholamreza Abaeiani, "Microring-based unitraveling carrier photodiodes for high bandwidth-efficiency product photodetection in optical communication", Journal of Lightwave Technology, Vol. 29, No. 9, pp. 1285-1292, MAY 1, 2011.
Hadis Abbaspour, Vahid Ahmadi, and Mohammad Hasan Yavari,"Aanalysis of QD VCSEL dynamic characteristics considering homogeneous and inhomogeneous broadening" IEEE J. Selected Topics in Quantum Electronics, Vol. 17, No. 5, pp. 1327-1333, SEPTEMBER/OCTOBER 2011.
Mohammad Hasan Yavari and Vahid Ahmadi, "Effects of Carrier Relaxation and Homogeneous Broadening on Dynamic and Modulation Behavior of Self-Assembled Quantum-Dot Laser", IEEE J. Selected Topics in Quantum Electronics, Vol. 17, No. 5, pp. 1153-1157, SEPTEMBER/OCTOBER 2011.
Mehdi Banihashemi and Vahid Ahmadi, "Nonlinear response of high efficient in-plane channel drop filter in Si heterostructure photonic crystal slab", Journal of Modern Optics Vol. 58, No. 7, pp. 587–592, April 2011.
Yousef Mohammadi Monfared and Vahid Ahmadi, "Design and Analysis of New Structure for High-Performance Low-Index Defect-Based Photonic Lattice VCSEL", Journal of Lightwave Technology, Vol. 30, No. 1, pp. 103-109, 2012
M. R. Aziziyan, V. Ahmadi and N. Moghadam, “A quantum model for light emission performance of carbon nanotube field effect transistor”, Applied Physics Letters, Vol. 100, No. 5, pp. 051113 (1-3), 2012.
Mohammad Reza Aziziyan, Narjes Moghadam, Davood Fathi and Vahid Ahmadi, “Analysis of strained double-lightly doped MOSCNT using NEGF”, Applied Physics A-Material Science & Processing, Vol. 109, pp. 481-488, 2012.
Mitra Hosseinifar, Vahid Ahmadi, and Gholamreza Abaeiani, “Design and optimization of high-performance microring-based uni-traveling carrier photodiode for WDM optical systems”, Optics Communications, Vol. 285, pp. 2081-2084, 2012.
Fatemeh Keshavarz and Vahid Ahmadi, "High-Speed Pattern Effect Free Cross-Gain Modulation in QD-VCSOA", Journal of Lightwave Technology, Vol. 30, No. 18, pp. 3043-3049, 2012.
Siamak Abaslou and Vahid Ahmad, “Compact all-optical switch for WDM networks based on Raman effect in silicon nanowavegide”, Optics Letters, Vol. 37, No. 1, pp. 40-42, January 1, 2012.
M. Zavvari, V. Ahmadi, A. Mir and E. Darabi, “Quantum dot infrared photodetector
enhanced by avalanche multiplication”, Electron Letters, Vol. 48, No. 10, pp. 589-591, May10, 2012.
M. Razaghi , M. Gandomkar, V. Ahmadi, N. K. Das and M. J. Connelly, “Picosecond wavelength conversion using semiconductor optical amplifier integrated with microring resonator notch filter”, Optical and Quantum Electronics, Vol. 44, No. 3-5, pp 255-263, 2012.
Hamed Pezeshki and Vahid Ahmadi, “Nanoscale effects on multichannel add/drop filter based on 2-D photonic crystal ring-resonator heterostructure”, Journal of Theoretical and Applied Physics, Vol. 6, No. 12, pp. 1-6, 2012.
M. Zavvari and V. Ahmadi, “Dynamics of avalanche quantum dot infrared photodetectors”, Modern Physics Letters B, Vol. 26, No. 32, pp. 1250216-(1-10), 2012.
V. Qaradaghi, V. Ahmadi, Gh. Abaeiani, “Design of organic vertical-cavity surface-emitting laser for electrical pumping”, IEEE Electronic Device Letters, Vol. 33, No. 11, pp. 1616 – 1618, Nov. 2012.
S. Padidar, V. Ahmadi, and M. Ebnali-Heidari, “Design of high sensitive pressure and temperature sensor using photonic crystal fiber for downhole application”, Vo. 4, No. 5, pp. 1590-1599, October 2012.
Hamed Pezeshki and Vahid Ahmadi, “All-optical bistable switching based on photonic crystal slab nanocavity using nonlinear Kerr effect”, Journal of Modern Optics, Vol. 60, No. 2, pp. 103–108, 2013.
Peyman Rafiee, Gholamhossein Haghighat and Vahid Ahmadi, “Characterization of one-dimensional lasing in semiconductor disordered nanopowders”, APPLIED OPTICS, Vol. 52, No. 4, pp. 659-665, 2013.