Prof. Vahid Ahmadi Profile

Prof. Vahid Ahmadi

at Tarbiat Modares Univ

SPIE Involvement:

Author

Publications (10)

SPIE Journal Paper | 17 March 2020

Ultrashort optical pulse polarization rotator based on azimuth angle rotation in semiconductor optical amplifier

Ahvan Sharifi, Mohammad Razaghi, Vahid Ahmadi

OE, Vol. 59, Issue 03, 036108, (March 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.3.036108

KEYWORDS: Polarization, Semiconductor optical amplifiers, Ultrafast phenomena, Optical engineering, Systems modeling, Electrical engineering, Telecommunications, Optical communications, Switches, Modulation

Read Abstract +

SPIE Journal Paper | 11 September 2013

New design of ring-based Raman amplifier using optofluidic materials

Amire Seyedfaraji, Vahid Ahmadi

OE, Vol. 52, Issue 09, 097103, (September 2013) https://doi.org/10.1117/12.10.1117/1.OE.52.9.097103

KEYWORDS: Raman spectroscopy, Optical amplifiers, Waveguides, Microrings, Dispersion, Electronic filtering, Absorption, Nonlinear optics, Silicon, Refractive index

Read Abstract +

Proceedings Article | 28 November 2011 Paper

Paper

Analysis of SHB and thermal characteristics in PC-VCSEL considering photonic crystal parameters

Gholamhosein Haghighat, Vahid Ahmadi, Saeed Pahlavan

Proceedings Volume 8308, 83082G (2011) https://doi.org/10.1117/12.920056

KEYWORDS: Photonic crystals, Vertical cavity surface emitting lasers, Oxides, Refractive index, Temperature metrology, Wafer-level optics, Thermal effects, Waveguides, Gallium arsenide, Hole burning spectroscopy

Read Abstract +

Proceedings Article | 5 March 2008 Paper

Paper

Circuit model for segmented traveling-wave electroabsorption modulators

K. Abedi, V. Ahmadi, M. Sheikhi, S. Gholmohammadi, M. Yavari

Proceedings Volume 7009, 70090X (2008) https://doi.org/10.1117/12.793409

KEYWORDS: Modulation, Waveguides, Microwave radiation, Modulators, Circuit switching, Device simulation, Capacitance, Photonic integrated circuits, Wave propagation, Optoelectronics

Read Abstract +

Proceedings Article | 5 March 2008 Paper

Paper

Soliton solution of nonlinear Schrodinger equation with application to Bose-Einstein condensation using the FD method

K. Abedi, Vahid Ahmadi, S. Gholmohammadi, E. Darabi, M. Yavari

Proceedings Volume 7009, 70090G (2008) https://doi.org/10.1117/12.793329

KEYWORDS: Solitons, Particles, Chemical species, Particle systems, Nonlinear optics, Wave propagation, Complex systems, Bosons, Phase shifts, Physics

Read Abstract +

Proceedings Article | 5 March 2008 Paper

Paper

Analysis for the characteristics of a voltage tunable functional quantum structure optoelectronic integrated device

E. Darabi, V. Ahmadi, K. Mirabbaszadeh

Proceedings Volume 7009, 700911 (2008) https://doi.org/10.1117/12.793424

KEYWORDS: Quantum wells, Excitons, Switching, Semiconductor lasers, Optoelectronics, Absorption, Optoelectronic devices, Instrument modeling, Active optics, Integration

Read Abstract +

Proceedings Article | 5 March 2008 Paper

Paper

Analysis of photon density distribution in three section DBR tunable laser diode

M. Yavari, V. Ahmadi, A. Zarifkar, K. Abedi

Proceedings Volume 7009, 700919 (2008) https://doi.org/10.1117/12.793870

KEYWORDS: Refractive index, Tunable lasers, Diodes, Interfaces, Reflectivity, Semiconductor lasers, Waveguides, Absorption, Matrices, Telecommunications

Read Abstract +

Proceedings Article | 5 March 2008 Paper

Paper

Calculation of the spontaneous emission spatial dependency in semiconductor lasers using transmission line model

Mohammad Razaghi, Vahid Ahmadi, Behrang Hadian Sihakal Mahalleh, Abbas Zarifkar

Proceedings Volume 7009, 70090A (2008) https://doi.org/10.1117/12.793314

KEYWORDS: Semiconductor lasers, Stereolithography, Waveguides, Systems modeling, Scattering, Reflectivity, Light scattering, Laser scattering, Telecommunications, Laser resonators

Read Abstract +

Proceedings Article | 25 May 2004 Paper

Paper

The effect of grating structure on relative intensity noise in DFB laser diode

Ebrahim Mortazy, Fatemeh Shahshahani, Vahid Ahmadi, Amirhossein Tehranchi, Mohammad Moravvej-Farshi

Proceedings Volume 5468, (2004) https://doi.org/10.1117/12.546840

KEYWORDS: Semiconductor lasers, Photons, Refractive index, Phase shifts, Dielectrics, Telecommunications, Shape analysis, Hole burning spectroscopy, Optical communications, Systems modeling

Read Abstract +

Proceedings Article | 13 November 2001 Paper

Paper

Using a neural networks algorithm for high-resolution imaging in pulsed laser radar

Mojtaba Joodaki, Guenter Kompa, Seyed Golam Arshad, Vahid Ahmadi, Mohammed Moravvej-Farshi

Proceedings Volume 4471, (2001) https://doi.org/10.1117/12.449335

KEYWORDS: LIDAR, Neural networks, Radar imaging, Evolutionary algorithms, Image resolution, Digital signal processing, Modulation, Detection and tracking algorithms, Neurons

Read Abstract +

Showing 5 of 10 publications

SIGN IN TO:

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Advertisement

Advertisement