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Dr. Abdulaziz Al-hetar

Taiz University, Communication and Computer, Faculty Member

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Papers by Dr. Abdulaziz Al-hetar

Optical Wavelength and Dimensions Tolerance Criterion for Multimode Interference Couplers

WSEAS TRANSACTIONS on COMMUNICATIONS, Nov 1, 2014

The self-imaging property of a homogeneous multi-moded planar optical waveguide has been applied ... more The self-imaging property of a homogeneous multi-moded planar optical waveguide has been applied in the design optical couplers based on multimode Interference (MMI). Based on this design, the optical wavelength and dimensions tolerance for MMI-3dB couplers are investigated analytically. They are shown to be inversely proportional to the multimode section width. Among Symmetrical, paired, and general mechanism interference types, the symmetrical one has the highest optical wavelength and dimensions tolerance.

Bandwidth and Fabrication Tolerance Criterion for Multimode Interference Splitters

16th International Conference on Mathematical and Computational Methods in Science and Engineering. KualaLampur, Malaysia, Apr 27, 2014

The Optical bandwidth and fabrication tolerance of multimode interference (MMI) 3-dB couplers are... more The Optical bandwidth and fabrication tolerance of multimode interference (MMI) 3-dB couplers are
investigated analytically. The optical bandwidth and fabrication tolerance are shown to be inversely proportional to
the multimode section width. Among Symmetrical, paired, and general mechanism interference types, the
symmetrical one has the highest bandwidth and fabrication tolerance.

 R. Q. SHADDAD, A. BAKAR MOHAMMAD, A. M. AL-HETAR "Spectral efficient hybrid wireless optical broadband access network (WOBAN) based on transmission of wireless MIMO OFDM signals over WDM PON" Optics Communications, 285(20), 15 September 2012, Pages 4059–4067. (indexed)

 Zaid Ahmed Shamsan, Tharek Abd Rahman, and Abdulaziz Mohammed Al-hetar" Interference Coordination For Lte-Advanced And Fm Broadcasting Interoperability" Annals of telecommunications Journal, pp 1-7, 23 Nov. 2011.

$Research paper thumbnail of Abdulaziz M. Al-hetar, Abu Bakar Mohammad, Abu Sahmah M. Supa’at, and Zaid A. Shamsan “MMI-MZI polymer thermo-optic switch with a high refractive index Contrast” IEEE JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 29, NO. 2, JANUARY 15, 2011$

Abdulaziz M. Al-hetar, Abu Bakar Mohammad, Abu Sahmah M. Supa’at, and Zaid A. Shamsan “MMI-MZI polymer thermo-optic switch with a high refractive index Contrast” IEEE JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 29, NO. 2, JANUARY 15, 2011

Abdulaziz M. Al-hetar, Abu Bakar Mohammad, Abu Sahmah M. Supa’at, and Zaid A. Shamsan, “Fabrication and Characterization Of Polymer Thermo-Optic Switch Based On MMI Coupler”, Optics Communications 284 (2011) 1181–1185)

$Research paper thumbnail of Abdulaziz M. Al-hetar, Abu Bakar Mohammad, Abu Sahmah M. Supa’at, Zaid A. Shamsan, and Ian Yulianti “A new structure of MMI polymer thermo-optic switch with a high refractive index contrast” Progress In Electromagnetics Research B (PIER B) Vol. 24, 103-120, 2010$

Abdulaziz M. Al-hetar, Abu Bakar Mohammad, Abu Sahmah M. Supa’at, Zaid A. Shamsan, and Ian Yulianti “A new structure of MMI polymer thermo-optic switch with a high refractive index contrast” Progress In Electromagnetics Research B (PIER B) Vol. 24, 103-120, 2010

Abdulaziz M. Al-hetar, Abu Sahmah M. Supa’at, A. B. Mohammad, and Ian Yulianti. Optimize a waveguide for thermooptic application. Journal Optoelectronic and advance materials- Rapid Communication. Vol. 4, No. (2), PP. 125-127, Feb 2010

Ian Yulianti, A.S.M. Supa’at, S.M. Idrus, Abdulaziz. M Al-hetar. Cosine Bend-Linear Waveguide Digital Optical Switch with Parabolic Heater. Optics and Laser Technology, 42, PP.180-185 ,2010.

Abu Sahmah M. Supa’at, Sevia M. Idrus, A. B. Mohammad, Ian Yulianti, Abdulaziz M. Al-Hetar " Parabolic heater for low crosstalk digital optical switch " Optoelectronics and Advanced Materials – Rapid Communications, Vol. 3, No. (5), PP. 418-423, May 2009

Z. A. Shamsan, A. M. Al-Hetar, and T. A. Rahman “Spectrum Sharing Studies of IMT-Advanced and FWA Services Under Different Clutter Loss and Channel Bandwidths Effects,” Progress In Electromagnetics Research, PIER(87), 331-344,2008.

Progress In …, Jan 1, 2008

Abdulaziz M. Al-hetar, I. Yulianti, Abu Sahmah M. Supa’at, A.B. Mohammad. Thermo-optic multimode interference switches with air and silicon trenches. Optics Communications 281, pp. 4653–4657, 2008.

Optics Communications, Jan 1, 2008

Abdulaziz M. Al-hetar, Abu Sahmah M. Supa’at, A.B. Mohammad, I. Yulianti. Crosstalk improvement of a thermo-optic polymer waveguide MZI–MMI switch. Optics Communications, 281, pp. 5764-5767, 2008

Optics Communications, Jan 1, 2008

Abdulaziz M. Al-hetar, Abu Sahmah M. Supa’at, A.B. Mohammad, I. Yulianti. Multimode Interference Photonic Switches. Optical Engineering, 47(11), pp. 11201-11206, 2008

Optical Engineering

Abdulaziz M. Al-hetar, Abu Sahmah M. Supa’at, A. B. Mohammad, and I. Yulianti. Thermo-optic switch based on Multimode Interference. Semiconductor Electronics, 2008. Proceeding of International Conference on Semiconductor Electronic, ICSE2008, Johor. Page(s):245-248 . November 2008, IEEE CNF

ieeexplore.ieee.org

Page 1. ICSE 2008 Proc. 2008, Johor Bahru, Malaysia Thermo-optic switch based on Multimode Interf... more

A. M. Al-Hetar, A. S. M. Supa'at, and A. B. Mohammad. A ridge waveguide for thermo-optic application. Progress In Electromagnetics Research Letters, Vol. 6, 1-9, 2009

Progress In Electromagnetics Research, Jan 1, 2009

Abdulaziz M. Al-hetar, Abu Sahmah M. Supa’at, A. B. Mohammad, and I. Yulianti. Thermal analysis for ridge and buried waveguides with a metal heater. International RF and Microwave Conference, RFM2008 Kuala Lumpur, Malaysia. On 2-4 Dec. 2008 Page(s):169-171 IEEE CNF

ieeexplore.ieee.org

Page 1. 2008 IEEE INTERNATIONAL RF AND MICROWAVE CONFERENCE PROCEEDINGS December 2 December 2-4, ... more

Abdulaziz M. Al-hetar, Abu Sahmah Bin Mohd Supa’at, N. M. Kassim and A. B. Mohammad. Design and optimization of optical power splitter based on multimode interference for 1.55-μm operation. Applied Electromagnetics, 2007. APACE 2007. Asia-Pacific Conference on 4-6 Dec. 2007 Page(s):1 – 4 IEEE CNF

Optical Engineering, Jan 1, 2008

Thermo-optic multimode interference switches with air and silicon trenches

Optics Communications, Jan 1, 2008

Spectrum sharing studies of IMT-advanced and FWA services under different clutter loss and channel bandwidths effects

Progress In Electromagnetics …, Jan 1, 2008

Optical Wavelength and Dimensions Tolerance Criterion for Multimode Interference Couplers

WSEAS TRANSACTIONS on COMMUNICATIONS, Nov 1, 2014

The self-imaging property of a homogeneous multi-moded planar optical waveguide has been applied ... more The self-imaging property of a homogeneous multi-moded planar optical waveguide has been applied in the design optical couplers based on multimode Interference (MMI). Based on this design, the optical wavelength and dimensions tolerance for MMI-3dB couplers are investigated analytically. They are shown to be inversely proportional to the multimode section width. Among Symmetrical, paired, and general mechanism interference types, the symmetrical one has the highest optical wavelength and dimensions tolerance.

Bandwidth and Fabrication Tolerance Criterion for Multimode Interference Splitters

16th International Conference on Mathematical and Computational Methods in Science and Engineering. KualaLampur, Malaysia, Apr 27, 2014

The Optical bandwidth and fabrication tolerance of multimode interference (MMI) 3-dB couplers are... more The Optical bandwidth and fabrication tolerance of multimode interference (MMI) 3-dB couplers are
investigated analytically. The optical bandwidth and fabrication tolerance are shown to be inversely proportional to
the multimode section width. Among Symmetrical, paired, and general mechanism interference types, the
symmetrical one has the highest bandwidth and fabrication tolerance.

 R. Q. SHADDAD, A. BAKAR MOHAMMAD, A. M. AL-HETAR "Spectral efficient hybrid wireless optical broadband access network (WOBAN) based on transmission of wireless MIMO OFDM signals over WDM PON" Optics Communications, 285(20), 15 September 2012, Pages 4059–4067. (indexed)

 Zaid Ahmed Shamsan, Tharek Abd Rahman, and Abdulaziz Mohammed Al-hetar" Interference Coordination For Lte-Advanced And Fm Broadcasting Interoperability" Annals of telecommunications Journal, pp 1-7, 23 Nov. 2011.

$Research paper thumbnail of Abdulaziz M. Al-hetar, Abu Bakar Mohammad, Abu Sahmah M. Supa’at, and Zaid A. Shamsan “MMI-MZI polymer thermo-optic switch with a high refractive index Contrast” IEEE JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 29, NO. 2, JANUARY 15, 2011$

Abdulaziz M. Al-hetar, Abu Bakar Mohammad, Abu Sahmah M. Supa’at, and Zaid A. Shamsan “MMI-MZI polymer thermo-optic switch with a high refractive index Contrast” IEEE JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 29, NO. 2, JANUARY 15, 2011

Abdulaziz M. Al-hetar, Abu Bakar Mohammad, Abu Sahmah M. Supa’at, and Zaid A. Shamsan, “Fabrication and Characterization Of Polymer Thermo-Optic Switch Based On MMI Coupler”, Optics Communications 284 (2011) 1181–1185)

$Research paper thumbnail of Abdulaziz M. Al-hetar, Abu Bakar Mohammad, Abu Sahmah M. Supa’at, Zaid A. Shamsan, and Ian Yulianti “A new structure of MMI polymer thermo-optic switch with a high refractive index contrast” Progress In Electromagnetics Research B (PIER B) Vol. 24, 103-120, 2010$

Abdulaziz M. Al-hetar, Abu Bakar Mohammad, Abu Sahmah M. Supa’at, Zaid A. Shamsan, and Ian Yulianti “A new structure of MMI polymer thermo-optic switch with a high refractive index contrast” Progress In Electromagnetics Research B (PIER B) Vol. 24, 103-120, 2010

Abdulaziz M. Al-hetar, Abu Sahmah M. Supa’at, A. B. Mohammad, and Ian Yulianti. Optimize a waveguide for thermooptic application. Journal Optoelectronic and advance materials- Rapid Communication. Vol. 4, No. (2), PP. 125-127, Feb 2010

Ian Yulianti, A.S.M. Supa’at, S.M. Idrus, Abdulaziz. M Al-hetar. Cosine Bend-Linear Waveguide Digital Optical Switch with Parabolic Heater. Optics and Laser Technology, 42, PP.180-185 ,2010.

Abu Sahmah M. Supa’at, Sevia M. Idrus, A. B. Mohammad, Ian Yulianti, Abdulaziz M. Al-Hetar " Parabolic heater for low crosstalk digital optical switch " Optoelectronics and Advanced Materials – Rapid Communications, Vol. 3, No. (5), PP. 418-423, May 2009

Z. A. Shamsan, A. M. Al-Hetar, and T. A. Rahman “Spectrum Sharing Studies of IMT-Advanced and FWA Services Under Different Clutter Loss and Channel Bandwidths Effects,” Progress In Electromagnetics Research, PIER(87), 331-344,2008.

Progress In …, Jan 1, 2008

Abdulaziz M. Al-hetar, I. Yulianti, Abu Sahmah M. Supa’at, A.B. Mohammad. Thermo-optic multimode interference switches with air and silicon trenches. Optics Communications 281, pp. 4653–4657, 2008.

Optics Communications, Jan 1, 2008

Abdulaziz M. Al-hetar, Abu Sahmah M. Supa’at, A.B. Mohammad, I. Yulianti. Crosstalk improvement of a thermo-optic polymer waveguide MZI–MMI switch. Optics Communications, 281, pp. 5764-5767, 2008

Optics Communications, Jan 1, 2008

Abdulaziz M. Al-hetar, Abu Sahmah M. Supa’at, A.B. Mohammad, I. Yulianti. Multimode Interference Photonic Switches. Optical Engineering, 47(11), pp. 11201-11206, 2008

Optical Engineering

Abdulaziz M. Al-hetar, Abu Sahmah M. Supa’at, A. B. Mohammad, and I. Yulianti. Thermo-optic switch based on Multimode Interference. Semiconductor Electronics, 2008. Proceeding of International Conference on Semiconductor Electronic, ICSE2008, Johor. Page(s):245-248 . November 2008, IEEE CNF

ieeexplore.ieee.org

Page 1. ICSE 2008 Proc. 2008, Johor Bahru, Malaysia Thermo-optic switch based on Multimode Interf... more

A. M. Al-Hetar, A. S. M. Supa'at, and A. B. Mohammad. A ridge waveguide for thermo-optic application. Progress In Electromagnetics Research Letters, Vol. 6, 1-9, 2009

Progress In Electromagnetics Research, Jan 1, 2009

Abdulaziz M. Al-hetar, Abu Sahmah M. Supa’at, A. B. Mohammad, and I. Yulianti. Thermal analysis for ridge and buried waveguides with a metal heater. International RF and Microwave Conference, RFM2008 Kuala Lumpur, Malaysia. On 2-4 Dec. 2008 Page(s):169-171 IEEE CNF

ieeexplore.ieee.org

Page 1. 2008 IEEE INTERNATIONAL RF AND MICROWAVE CONFERENCE PROCEEDINGS December 2 December 2-4, ... more

Abdulaziz M. Al-hetar, Abu Sahmah Bin Mohd Supa’at, N. M. Kassim and A. B. Mohammad. Design and optimization of optical power splitter based on multimode interference for 1.55-μm operation. Applied Electromagnetics, 2007. APACE 2007. Asia-Pacific Conference on 4-6 Dec. 2007 Page(s):1 – 4 IEEE CNF

Optical Engineering, Jan 1, 2008

Thermo-optic multimode interference switches with air and silicon trenches

Optics Communications, Jan 1, 2008

Spectrum sharing studies of IMT-advanced and FWA services under different clutter loss and channel bandwidths effects

Progress In Electromagnetics …, Jan 1, 2008