نتایج جستجو برای: PICS3D

تعداد نتایج: 11  

2005
J. Piprek S. Li P. Mensz J. Hader

Wavelength converters are a novel class of photonic integrated circuits that is crucial for multiwavelength fiber-optic communication networks [1]. Such converters switch the flow of information from one wavelength to another. We present here the simulation and analysis of an optoelectronic InP-based tunable wavelength converter (Fig. 14.1) that monolithically combines a preamplified receiver w...

1999
Joachim Piprek Patrick Abraham John E Bowers

We evaluate temperature effects on threshold current and slope efficiency of 1.55μm Fabry-Perot lasers between 20C and 120C. Experimental results are analyzed using the commercial laser simulator PICS3D. The software self-consistently combines two-dimensional carrier transport, heat flux, strained quantum well gain computation, and optical wave guiding with a longitudinal mode solver. All relev...

Journal: :international journal of optics and photonics 0
zahra danesh kaftroudi department of engineering sciences, faculty of technology and engineering east of guilan, university of guilan, 44891-63157, rudsar-vajargah, iran esfandiar rajaei department of physics, university of guilan, 41335-1914, rasht, iran

in this study, we have theoretically investigated the effect of electron stopper layer on internal temperature distribution of high performance vertical cavity surface-emitting laser emitting at 1305 nm.  simulation software pics3d, which self-consistently combines the 3d simulation of carrier transport, self-heating, gain computation and wave-guiding, was used. simulation results show that cha...

In this study, we have theoretically investigated the effect of electron stopper layer on internal temperature distribution of high performance vertical cavity surface-emitting laser emitting at 1305 nm. Simulation software PICS3D, which self-consistently combines the 3D simulation of carrier transport, self-heating, gain computation and wave-guiding, was used. Simulation results show that chan...

1999
Joachim Piprek Patrick Abraham John E. Bowers

We investigate loss mechanisms in 1.55m InGaAsP–InP multiquantum-well ridge-waveguide laser diodes at room temperature. The common method of measuring light versus current curves and plotting the inverse slope efficiency versus laser length is employed to extract the internal optical loss i and the differential internal efficiency i. This method neglects the dependence of both the parameters on...

Journal: :IEEE Photonics Journal 2022

We designed and demonstrated a temperature-stable, wide-tuned, high-power Vertical External Cavity Surface-emitting Laser (VECSEL) with simple linear cavity. The quantum well is optimized by using the commercial PICS3D software to obtain wide gain good thermal performance. curve of BF has also been optimized, birefringent filter (BF) thickness 1mm selected as tuning element. Then, we obtained c...

2015
Georgios Kyritsis

The research that is described in detail in this thesis investigates key characteristics of the operation of Tunable Laser Diodes (TLDs), such as Continuous Wave (CW) operation, discontinuous, continuous and quasicontinuous wavelength tuning and direct Intensity Modulation (IM) (small-signal analysis). Two software simulation tools were used to model the TLDs and investigate their operation, Cr...

   Self-heating leads to a temperature rise of the laser diode and limits the output power and efficiency due to increased loss and decreased differential gain. To control device self-heating, it is required to design the laser structure with a low optical loss, while the heat flux must spread out of the device efficiently. In this study, a new asymmetric waveguide design is proposed and th...

Today, electron leakage in InP-based separate confinement laser diode has a serious effect on device performance. Control of electron leakage current is the aim of many studies in semiconductor laser industry. In this study, for the first time, a new asymmetric waveguide structure with n-interlayer for a 1.325 μm InP-based laser diode with InGaAsP multi-quantum well is proposed and theoreticall...

To enhance lasers’ power and improve their performance, a model wasapplied for the waveguide design of 400 nm InGaN/InGaN semiconductor laser, whichis much easier to implement. The conventional and new laser structures weretheoretically investigated using simulation software PICS3D, which self-consistentlycombines 3D simulation of carrier transport, self-heating, and opt...

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