Analysis of quantum-dot-embedded multicavity arrays for on-chip WDM applications

Erdinc, Havva
Kocaman, Serdar
Transmission and group delay characteristics of a single-quantum-dot-(QD)-embedded double-cavity array and a triple-cavity array are compared theoretically in the weak coupling regime. When the extrinsic cavity decay rate is comparably higher than the intrinsic cavity decay rate at equal coupling strengths and normalized detuning values, transmission values of both systems converge with each other but the phase delay generated at triple-cavity systems is higher than that of the single-QD-embedded double-cavity array system. The results confirmed by the transmission calculations for both cases provide a comparative tool for designing onchip wavelength division multiplexing systems.


Effects of Array Dimensions on the Resonance Characteristics of SRR Type Metamaterial Arrays with Small Sizes: Simulations and Experiments
Ekmekci, E.; Topalli, K.; Akın, Tayfun; Sayan, Gönül (2009-08-21)
It has been discussed in various studies that two dimensional periodical arrays of SRRs with large array sizes have wider stop bandwidths and lower transmission magnitudes around their resonance frequencies as compared to the single SRR unit cell. In this paper, effects of array dimensions on the transmission characteristics of SRR arrays are investigated in more detail especially for small sized arrays in a comparative manner. For this purpose, various SRR arrays with small array sizes are fabricated and t...
Investigation of multilevel inverters for d-statcom applications
Deniz, Mustafa; Ermiş, Muammer; Department of Electrical and Electronics Engineering (2009)
The most important advantages of Multilevel Inverters are the absence of a coupling transformer for medium voltage applications and low harmonic current content. In this way, relocatable and economical STATCOM systems can be realized. Complex control algorithms and the isolation problems of measurement devices and power supplies are the main challenging parts of this type of application. In this study, the design, realization, and the performance of a Voltage Source Type Cascaded Multilevel Converter Based ...
Dimension reduced robust beamforming for towed arrays
Topçu, Emre; Candan, Çağatay; Department of Electrical and Electronics Engineering (2015)
Adaptive beamforming methods are used to obtain higher signal to interference plus noise ratio at the array output. However, these methods are very sensitive to steering vector and covariance matrix estimation errors. To overcome this issue, robust methods are usually employed. On the other hand, implementation of these robust methods can be computationally expensive for arrays with large number of sensors. Reduced dimension techniques aim to lower the computational load of adaptive beamforming algorithms w...
Design of pattern reconfigurable antennas by using characteristic mode theory
Aydın, Tolunay; Alatan, Lale; Department of Electrical and Electronics Engineering (2020-10-22)
Pattern reconfigurable antennas improve the performance of the system in applications which have dynamic radiation pattern requirements like multi- input multi-output arrays, phased arrays and body area networks. Characteristic mode theory was shown to be useful when investigating the possible orthogonal radiation patterns on an antenna element. Due to improvements in computation capacity of the modern computers, characteristic mode analysis can be used efficiently during the design of pattern reconfigurabl...
A Novel Broadband Multilevel Fast Multipole Algorithm With Incomplete-Leaf Tree Structures for Multiscale Electromagnetic Problems
Takrimi, Manouchehr; Ergül, Özgür Salih; Erturk, Vakur B. (2016-06-01)
An efficient and versatile broadband multilevel fast multipole algorithm (MLFMA), which is capable of handling large multiscale electromagnetic problems with a wide dynamic range of mesh sizes, is presented. By invoking a novel concept of incomplete-leaf tree structures, where only the overcrowded boxes are divided into smaller ones for a given population threshold, versatility of using variable-sized boxes is achieved. Consequently, for geometries containing highly overmeshed local regions, the proposed me...
Citation Formats
H. Erdinc and S. Kocaman, “Analysis of quantum-dot-embedded multicavity arrays for on-chip WDM applications,” TURKISH JOURNAL OF PHYSICS, pp. 356–370, 2018, Accessed: 00, 2020. [Online]. Available: