Ukufa

الملف الشخصي

بكلوريوس هندسة الليزر والالكترونيات البصرية، جامعة النهرين 2005.
ماجستير هندسة الليزر والالكترونيات البصرية، جامعة النهرين 2008.
دكتوراه ليزر/هندسة الكترونيك واتصالات، جامعة بغداد 2015.
تدريسي في قسم هندسة الالكترونيك والاتصالات منذ تشرين الثاني 2014.
تدريسي في قسم هندسة الكهرباء، جامعة الكوفة من تشرين الاول 2009 حتى تشرين الثاني 2014.
باحث زائر في جامعة كولورادو الامريكية في بولدر.
مهندس تراسل وموجات دقيقة في شركة زين للاتصالات النقالة 2006 - 2009.

عرض المزيد

الاهتمامات البحثية

الكهرومغناطيسية، الموجات الراديوية والدقيقة.
بصريات وفوتونيات
حوسبة الكهرومغناطيسيات
بصريات مدمجة
الدوائر الفوتونية المتكاملة

البحوث المنشورة

Losses of Slot Mode Devices

الباحث الأول: Maithem Salih

الباحثين الآخرين: Keyon Janani ; Xi Chen ; Eric Jacobson ; Sarita Gautam ; Alan Mickelson

المجلة: Journal of Lightwave Technology

تاريخ النشر: None

مختصر البحث:

An array of 200 silicon-on-insulator slot waveguide devices of varying slot widths, ribs widths, taper lengths, and slot lengths were created in each cell of a wafer fabricated at a commercial foundry. The cells were cleaved into individual chips af… An array of 200 silicon-on-insulator slot waveguide devices of varying slot widths, ribs widths, taper lengths, and slot lengths were created in each cell of a wafer fabricated at a commercial foundry. The cells were cleaved into individual chips after fabrication. Some chips were coated with thin films of polymers that fully infiltrated the slots. Measurements of spectral loss were made on the grating coupler waveguide devices of both coated and uncoated chips. Individual devices exhibited insertion losses varying from several dB up to values so great that the response was below the noise floor of the optical spectrum analyzer (OSA) employed as a receiver. The chips that failed the transmission test were primarily uncoated ones. Nominally identical devices on different chips exhibited nominally identical behavior. A commercial software program was used to simulate each of the structures that were included in the 200 device test. The simulations were seen to agree quantitatively well with the experimental results and to show a degree of qualitative agreement. Comparison of the experiment and the simulations indicate that the loss inherent in a slot waveguide is quite low. Also near loss free couplers from ridges to slots are achievable. Use of a surface roughness model in comparison with analytical results for slow mode propagation indicates that the excess loss that slots exhibit with respect to a ridge mode counterpart arise almost solely from surface scattering off the surface roughness. The increased loss in the case of the slot guide arises from the higher electromagnetic energy density at the surface of the guide due to the electric field discontinuity that is employed as a guidance mechanism in slot modes in contradistinction to ridge modes that are index-guided. Conclusions include some speculation as to the limits on the loss that can be achieved by variation aware design of slot guides without any improvement in surface roughness over what is now available with fabrication in commercial foundries.

عرض المزيد عرض البحث

Losses of Fabricated SOI Slot Waveguides Measurements and Analysis

الباحث الأول: Maithem Salih

المجلة: LAMBERT Academic Publishing

تاريخ النشر: None

مختصر البحث:

This work aims to estimate experimentally and theoretically the losses of the SOI slot waveguide, classify them according to their sources, study the influence of the characteristics of this type of waveguides on those losses, and introduce a compre…

عرض المزيد عرض البحث

Practice and Theory in Silicon-on-Insulator Slot Waveguides

الباحث الأول: Maithem Salih

الباحثين الآخرين: Xi Chen, Eric J Jacobson, Keyon Janani, Sarita Gautam, Alan Mickelson

المجلة: IEEE Photonic Conference 2014 (IPC2014)

تاريخ النشر: None

مختصر البحث:

Spectral transmission measurements of grating coupled ridge waveguides transitioned to nanometric slots are found to agree with simulations when the measurements are deembedded and the ridge to gap transitions are endowed with excess propagation …

عرض المزيد عرض البحث

ميثم نعيم صالح شكر

ميثم نعيم صالح شكر

الملف الشخصي

الاهتمامات البحثية

البحوث المنشورة

Losses of Slot Mode Devices

Losses of Fabricated SOI Slot Waveguides Measurements and Analysis

Practice and Theory in Silicon-on-Insulator Slot Waveguides