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Items where Author is "Najafi, S. Iraj"

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Number of items: 89.

Article

Moujoud, A., Saddiki, Z., Touam, T., & Najafi, S. I. (2002). Measurement of the refractive-index variations with temperature of hybrid sol-gel glasses. Thin Solid Films, 422(1-2), 161-165. External link

Alavian, S., Touam, T., & Najafi, S. I. (2000). Analysis of integrated photonics devices by a new simplified propagation method. Journal of optical communications, 21(2), 60-65. External link

Shooshtari, A., Touam, T., Safavi-Naeini, S., & Najafi, S. I. (2000). Beam propagation method for analysis of er-doped integrated optics devices. Optical Engineering, 39(3), 735-737. External link

Blanc, D., Pelissier, S., Saravanamuttu, K., Najafi, S. I., & Andrews, M. P. (1999). Self-Processing of Surface-Relief Gratings in Photosensitive Hybrid Sol-Gel Glasses. Advanced Materials, 11(18), 1508-1511. External link

Pelissier, S., Blanc, D., Andrews, M. P., Najafi, S. I., Tishchenko, A. V., & Parriaux, O. (1999). Single-Step Uv Recording of Sinusoidal Surface Gratings in Hybrid Solgel Glasses. Applied Optics, 38(32), 6744-6748. External link

Fardad, A., Andrews, M., Milova, G., Malek-Tabrizi, A., & Najafi, S. I. (1998). Fabrication of Ridge Waveguides: a New Solgel Route. Applied Optics, 37(12), 2429-2434. External link

Najafi, S. I. (1998). Integrated Optics. Optical Engineering, 37(4), 1100-1100. External link

Shooshtari, A., Meshkinfam, P., Touam, T., Andrews, M. P., & Najafi, S. I. (1998). Ion-Exchanged Er/Yb Phosphate Glass Waveguide Amplifiers and Lasers. Optical Engineering, 37(4), 1188-1192. External link

Saravanamuttu, K., Du, X. M., Najafi, S. I., & Andrews, M. P. (1998). Photoinduced Structural Relaxation and Densification in Sol- Gel-Derived Nanocomposite Thin Films: Implications for Integrated Optics Device Fabrication. Canadian Journal of Chemistry, 76(11), 1717-1729. External link

Najafi, S. I., Touam, T., Sara, R., Andrews, M. P., & Fardad, M. A. (1998). Sol-Gel Glass Waveguide and Grating on Silicon. Journal of Lightwave Technology, 16(9), 1640-1646. External link

Touam, T., Du, X. M., Fardad, M. A., Andrews, M. P., & Najafi, S. I. (1998). Sol-Gel Glass Waveguides With Bragg Grating. Optical Engineering, 37(4), 1136-1142. External link

Du, X. M., Touam, T., Degachi, L., Guilbault, J. L., Andrews, M. P., & Najafi, S. I. (1998). Sol-Gel Waveguide Fabrication Parameters: an Experimental Investigation. Optical Engineering, 37(4), 1101-1104. External link

Shooshtari, A., Touam, T., & Najafi, S. I. (1998). Yb3+ Sensitized Er3+-Doped Waveguide Amplifiers: a Theoretical Approach. Optical and Quantum Electronics, 30(4), 249-264. External link

Ohtsuki, T., Honkanen, S., Najafi, S. I., & Peyghambarian, N. (1997). Cooperative upconversion effects on the performance of er3+-doped phosphate glass waveguide amplifiers. Journal of the Optical Society of America. B, Optical Physics, 14(7), 1838-1845. External link

Touam, T., Milova, G., Saddiki, Z., Fardad, M. A., Andrews, M. P., Chrostowski, J., & Najafi, S. I. (1997). Organoaluminophosphate sol-gel silica glass thin films for integrated optics. Thin Solid Films, 307(1), 203-207. External link

Mashayekhi, M., Touam, T., Wang, W. J., Berolo, E., & Najafi, S. I. (1997). Semiconductor device to optical fiber coupling using low-loss glass taper waveguide. Optical Engineering, 36(12), 3476-3477. External link

Coudray, P., Etienne, P., Moreau, Y., Porque, J., & Najafi, S. I. (1997). Sol-gel channel waveguide on silicon: fast direct imprinting and low cost fabrication. Optics Communications, 143(4-6), 199-202. External link

Touam, T., & Najafi, S. I. (1997). Symmetric profile beams from waveguides with asymmetric grating couplers. Applied Optics, 36(12), 2554-2558. External link

Coudray, P., Chisham, J., Andrews, M. P., & Najafi, S. I. (1997). Ultraviolet light imprinted sol-gel silica glass low-loss waveguides for use at 1.55 um. Optical Engineering, 36(4), 1234-1240. External link

Fardad, M. A., Touam, T., Meshkinfam, P., Sara, R., Du, X. M., Andrews, M. P., & Najafi, S. I. (1997). UV-light imprinted Bragg grating in sol-gel ridge glass waveguide with almost 100% reflectivity. Electronics Letters, 33(12), 1069-1070. External link

Guerreiro, P. T., Lee, S. G., Rodrigues, A. S., Hu, Y. Z., Wright, E. M., Najafi, S. I., Mackenzie, J., & Peyghambarian, N. (1996). Femtosecond pulse propagation near a two-photon transition in a semiconductor quantum-dot waveguide. Optics Letters, 21(9), 659-661. External link

Coudray, P., Chisham, J., Malek-Tabrizi, A., Li, C.-Y., Andrews, M. P., Peyghambarian, N., & Najafi, S. I. (1996). Ultraviolet light imprinted sol-gel silica glass waveguide devices on silicon. Optics Communications, 128(1-3), 19-22. External link

Ohtsuki, T., Peyghambarian, N., Honkanen, S., & Najafi, S. I. (1995). Gain characteristics of a high concentration Er³⁺ doped phosphate glass waveguide. Journal of Applied Physics, 78(6), 3617-3621. External link

François, V., Ohtsuki, T., Peyghambarian, N., & Najafi, S. I. (1995). Length optimization of single-mode rare-earth doped waveguides using saturated absorption. IEEE Photonics Technology Letters, 7(8), 872-874. External link

Li, C.-Y., Chisham, J., Andrews, M., Najafi, S. I., Mackenzie, J. D., & Peyghambarian, N. (1995). Sol-gel integrated optical coupler by ultraviolet light imprinting. Electronics Letters, 31(4), 271-272. External link

François, V., Ohtsuki, T., Peyghambarian, N., & Najafi, S. I. (1995). Thermally silver ion exchanged integrated-optic lasers in neodymium-doped silicate glass. Optics Communications, 119(1-2), 104-108. External link

Chen, J. Y., & Najafi, S. I. (1994). Adiabatic polymer-glass-waveguide all-optical-switch. Applied Optics, 33(16), 3375-3383. External link

Saarinen, J., Huttunen, J., Honkanen, S., & Najafi, S. I. (1994). Double-ion-exchange process in glass for the fabrication of computer-generated waveguide holograms. Applied Optics, 33(16), 3353-3359. External link

Zhang, H., Schwelb, O., Li Ming, J., & Najafi, S. I. (1994). Fully planar proton-exchanged lithium niobate waveguides with grating taps. Applied Optics, 33(16), 3391-3393. External link

Zhang, G., Honkanen, S., Tervonen, A., Wu, C.-M., & Najafi, S. I. (1994). Glass integrated optics circuit for 1.48/1.55- and 1.30/1.55-&mu;m wavelength division multiplexing and 1/8 splitting. Applied Optics, 33(16), 3371-3374. External link

Najafi, S. I., Gomez-Reino, C., & Fujii, Y. (1994). GRIN '92: gradient-index optical systems. Applied Optics, 33(16), 3331-3332. External link

Guangwen, Z., Honkanen, S., Najafi, S. I., Tervonen, A., & Katila, P. (1994). Ion-exchanged glass waveguide Mach-Zehnder interferometers for wavelength multi/demultiplexing and the effect of thermal post-annealing on spectral transmission. Pure and Applied Optics, 3(5), 907-913. External link

Auger, P. L., & Najafi, S. I. (1994). New method to design directional coupler dual wavelength multi/demultiplexer with bends at both extremities. Optics Communications, 111(1-2), 43-50. External link

Auger, P. L., & Najafi, S. I. (1994). Potassium- and silver-double-ion-exchanged slab glass waveguides: characterization and modeling. Applied Optics, 33(16), 3333-3337. External link

Lamouche, G., & Najafi, S. I. (1990). Theoretical study of optical behavior of glass waveguides with grating. Proceedings of SPIE, 1 page. External link

Paper

Najafi, S. I., Touam, T., & Shooshtari, A. (1998, June). Beam propagation method for analysis of Er-doped integrated optics devices [Paper]. 10th Innovative light emitting materials. Topical symposium & 9th CIMTECH-World ceramics congress and forum on new materials, Florence, Italy. Published in Advances in science and technology. Unavailable

Dalacu, D., Brown, A. C., Sapieha, J.-E., Martinu, L., Wertheimer, M. R., Najafi, S. I., & Andrews, M. A. (1998, November). Characterization of plasma-deposited Au/fluoropolymer nanocomposite films for nonlinear optical application [Paper]. 1998 MRS Fall Meeting: Symposium on Plasma Deposition and Treatment of Polymers, Boston, MA. Published in Materials Research Society Symposium - Proceedings, 544. External link

Blanc, D., Pelissier, S., Najafi, S. I., & Andrews, M. P. (1999, September). Efficient surface gratings in hybrid sol-gel glasses [Paper]. Optical devices for fiber communication. Conference, Boston, MA, USA. External link

Gurney, J. A., Vargas-Baca, I., Andrews, M. P., Brown, A. C., & Najafi, S. I. (1998, July). Azo-dye hybrid sol-gel glass composites for optoelectronics [Paper]. Organic-Inorganic Hybrid Materials for Photonics, San Diego, CA, USA. External link

Najafi, S. I. (1998, January). Glass integrated optics : 30 years of R & D [Paper]. Integrated Optic Devices II, San Jose CA, USA. External link

Khazaei, H. R., Wang, W. J., Berolo, E., & Ghannouchi, F. M. (1998, January). High speed GaAs/AlGaAs traveling wave electro-optic modulators [Paper]. Integrated Optic Devices II, San Jose CA, USA. External link

Coudray, P., Etienne, P., Porque, J., Moreau, Y., & Najafi, S. I. (1998, January). Integrated optical devices achieved by sol-gel process [Paper]. Integrated Optic Devices II, San Jose CA, USA. External link

Andrews, M. P., Saravanamuttu, K., & Najafi, S. I. (1998, July). Light induced densification and mechanisms in hybrid sol-gel glasses for photonic devices [Paper]. Organic-Inorganic Hybrid Materials for Photonics, San Diego, CA, USA. External link

Touam, T., Sara, R., Andrews, M. P., & Najafi, S. I. (1998, June). Photoinscribed waveguides, devices, and gratings in polyglass on silicon [Paper]. International Optical Design Conference 1998, Kona, HI, USA. External link

Sara, R., Touam, T., Blanchetiere, C., Saddiki, Z., Saravanamuttu, K., Du, X. M., Chrostowski, J., Andrews, M. P., & Najafi, S. I. (1998, July). Photolithography fabrication of sol-gel ridge waveguides [Paper]. Organic-Inorganic Hybrid Materials for Photonics, San Diego, CA, USA. External link

Sara, R., Touam, T., Coudray, P., Andrews, M. P., & Najafi, S. I. (1998, July). Polyglass integrated optics devices for lightwave communication [Paper]. Organic-Inorganic Hybrid Materials for Photonics, San Diego, CA, USA. External link

Rahmani, S., Touam, T., Andrews, M. P., & Najafi, S. I. (1998, July). Polyglass integrated photonic devices [Paper]. Organic-Inorganic Hybrid Materials for Photonics, San Diego, CA, USA. External link

Fardad, M. A. (1998, January). SBN photonic devices [Paper]. Integrated Optic Devices II, San Jose CA, USA. External link

Touam, T., Du, X. M., Fardad, M. A., Andrews, M. P., & Najafi, S. I. (1998, January). Theoretical and experimental study of ridge waveguides with Bragg grating derived from hybrid sol-gel glasses [Paper]. Photosensitive Optical Materials and Devices II, San Jose, CA, USA. External link

Mashayekhi, M., Touam, T., Wang, W., Berolo, E., & Najafi, S. I. (1997, February). Diode laser array to optical fiber multiplexing via glass waveguide [Paper]. Integrated Optics Devices : Potential for Commercialization, San Jose, CA, USA. External link

Honkanen, S., Ohtsuki, T., Jiang, S., Najafi, S. I., & Peyghambarian, N. (1997, February). High Er concentration phosphate glasses for planar waveguide amplifiers [Paper]. Rare-earth-doped devices. Conference, San Jose, CA, USA. External link

Meshkinfam, P., Fournier, P., Fardad, M. A., Andrews, M. P., & Najafi, S. I. (1997, February). Integrated optics Er:Yb amplifier with potassium ion-exchanged glass waveguides [Paper]. Integrated Optics Devices : Potential for Commercialization, San Jose, CA, USA. External link

Najafi, S. I. (1997, February). Overview of Nd- and Er-doped glass integrated optics amplifiers and lasers [Paper]. Rare-earth-doped devices. Conference, San Jose, CA, USA. External link

Andrews, M. P., & Najafi, S. I. (1997, July). Passive and active sol gel materials and devices [Paper]. Sol-gel and polymer photonic devices Conference, San Diego, CA. Published in Critical reviews of optical science and technology, 68. Unavailable

Andrews, M. P., & Najafi, S. I. (1997, July). Passive and active sol-gel materials and devices [Paper]. Sol-Gel and Polymer Photonic Devices: A Critical Review, San Diego, CA, USA. External link

Fournier, P., Meshkinfam, P., Fardad, M. A., Andrews, M. P., & Najafi, S. I. (1997, May). Potassium ion-exchanged Er-doped phosphate glass integrated optics amplifier [Paper]. 1997 Conference on Lasers and Electro-Optics, CLEO, Baltimore, MD, USA. External link

Touam, T., & Najafi, S. I. (1996, January). Accurate analysis of reflective and diffractive gratings for integrated optics [Paper]. Functional Photonic and Fiber Devices, San Jose, CA, USA. External link

Andrews, M. P., Kanigan, T., & Najafi, S. I. Auto-embossed Bragg gratings from self-organizing polymers: chemical tuning of periodicity and photoinduced anisotropy [Paper]. Functional Photonic and Fiber Devices. External link

Milova, G., Najafi, S. I., Skirtach, A., Simkin, D., & Andrews, M. P. Erbium in photosensitive hybrid organoaluminosilicate sol-gel glasses [Paper]. Integrated Optics Devices : Potential for Commercialization. External link

Malek-Tabrizi, A., Najafi, S. I., & Martinu, L. (1996, January). Glass integrated optics symmetric and nonsymmetric Mach-Zehnder interferometer sensors [Paper]. Functional Photonic and Fiber Devices, San Jose, CA, USA. External link

Chisham, J. E., Andrews, M. P., Li, C.-Y., Najafi, S. I., & Malek-Tabrizi, A. Gratings fabrication by ultraviolet light imprinting and embossing in a sol-gel silica glas [Paper]. Functional Photonic and Fiber Devices. External link

Fardad, M. A., Andrews, M. P., & Najafi, S. I. Novel sol-gel fabrication of integrated optical waveguides [Paper]. Integrated Optics Devices : Potential for Commercialization. External link

Hatami-Hanza, H., & Najafi, S. I. (1997, February). Photon manipulation by means of passive integrated optic circuits [Paper]. Integrated Optics Devices : Potential for Commercialization, San Jose, CA. External link

Seguin, F., & Najafi, S. I. (1996, January). Spectral technique for the simultaneous measurement of pressure and temperature [Paper]. Functional Photonic and Fiber Devices, San Jose, CA, USA. External link

Najafi, S. I., Li, C.-Y., Chisham, J. E., Andrews, M. P., Coudray, P., Malek-Tabrizi, A., & Peyghambarian, N. (1996, January). Ultraviolet-light-imprinted sol-gel silica glass channel waveguides on silicon [Paper]. Functional Photonic and Fiber Devices, San Jose, CA, USA. External link

Najafi, S. I., Andrews, M. P., Fardad, M. A., Milova, G., Tahar, T., & Coudray, P. (1996, October). UV-light imprinted surface, ridge and buried sol-gel glass waveguides and devices on silicon [Paper]. Fiber integrated optics. Conference, Berlin, DEU. External link

Coudray, P., Chisham, J. E., Malek-Tabrizi, A., Li, C.-Y., Andrews, M. P., & Najafi, S. I. (1996, January). UV-light-imprinted sol-gel silica glass waveguide 1x8 beam splitter on silicon [Paper]. Functional Photonic and Fiber Devices, San Jose, CA, USA. External link

Li, C.-Y., Ingenhoff, J., Najafi, S. I., Chisham, J., MacLachlan, M., Andrews, M. P., Kao, Y.-H., Mackenzie, J. D., Ohtsuki, T., & Peyghambarian, N. (1995, February). Er-doped sol-gel glasses for integrated optics [Paper]. Optoelectronic Integrated Circuit Materials, Physics, and Devices, San Jose, CA, USA. External link

François, V., Ohtsuki, T., Peyghambarian, N., & Najafi, S. I. (1995, February). Fabrication and characterization of ion-exchanged neodymium-doped glass waveguide lasers [Paper]. Functional Photonic Integrated Circuits, San Jose, CA, USA. External link

Najafi, S. I., Li, C.-Y., Andrews, M. P., Chisham, J., Lefebvre, P., Mackenzie, J. D., & Peyghambarian, N. (1995, February). Integrated optics devices by ultraviolet light imprinting in sol-gel silica glass [Paper]. Functional Photonic Integrated Circuits, San Jose, CA, USA. External link

Ingenhoff, J., Lefebvre, P., Zhang, W. G., Li, C.-Y., Ross, L., & Najafi, S. I. (1995, February). Minimizing losses in silver ion-exchanged waveguides using a double ion-exchange process [Paper]. Functional Photonic Integrated Circuits, San Jose, CA, USA. External link

Najafi, S. I., & Fallahi, M. Circular grating surface emitting lasers [Paper]. Nanofabrication Technologies and Device Integration. External link

Najafi, S. I. (1994, January). Circular gratings and applications in integrated optics/optoelectronics [Paper]. Nonlinear Optics for High-Speed Electronics and Optical Frequency Conversion, Los Angeles, CA, USA. External link

Zhang, G.-W., Honkanen, S., Najafi, S. I., Tervonen, A., & Katila, P. Effect of thermal post-annealing on spectral transmission of 0.807/1.3 um, 1.48/1.55 um, and 1.3/1.55 um ion-exchanged Mach-Zehnder interferometer wavelength demultiplexers/multiplexers [Paper]. Nanofabrication Technologies and Device Integration. External link

Zhang, G.-W., Honkanen, S., Najafi, S. I., & Tervonen, A. Glass integrated optics circuit for 1.3/1.55 micrometer optical communication system [Paper]. Nanofabrication Technologies and Device Integration. External link

Li, C.-Y., Kao, Y.-H., Hayashi, K., Takada, T., Mackenzie, J. D., Kang, K.-I., Lee, S.-G., Peyghambarian, N., Yamane, M., Zhang, G.-W., & Najafi, S. I. (1994, July). Improving CdS quantum dot materials by the sol-gel method [Paper]. Sol-Gel Optics III, San Diego, CA, United states. External link

Najafi, S. I., Fallahi, M., Lefebvre, P., François, V., & Templeton, I. M. Integrated optical tap-power-divider [Paper]. Nanofabrication Technologies and Device Integration. External link

Saarinen, J., Honkanen, S., Zhang, G.-W., & Najafi, S. I. Modified double ion-exchange method for the fabrication of phase gratings in glass waveguides [Paper]. Nanofabrication Technologies and Device Integration. External link

François, V., Najafi, S. I., Ohtsuki, T., Peygambarian, N., Honkanen, S., Lafrenière, S., & Andrews, M. P. Progress toward realization of rare-earth-doped glass integrated-optics lasers [Paper]. Nanofabrication Technologies and Device Integration. External link

Peyghambarian, N., Tajalli, H., Wright, E. M., Koch, S. W., Najafi, S. I., Hulin, D., & Mackenzie, J. D. (1994, July). Quantum dot glass integrated optical devices [Paper]. Glass Integrated Optics and Optical Fiber Devices: A Critical Review, San Diego, CA, USA. External link

Najafi, S. I., Honkanen, S., & Tervonen, A. (1994, July). Recent progress in glass integrated optical circuits [Paper]. Integrated Optics and Microstructures II, San Diego, CA, USA. External link

Chen, J. Y., & Najafi, S. I. (1994, April). Y-branch polymer-glass-waveguide all-optical switch [Paper]. Linear and Nonlinear Integrated Optics, Lindau, Germany. External link

Najafi, S. I. (1993, January). Attachment of optical fiber to integrated optical devices [Paper]. Integrated Optics and Optoelectronics: A Critical Review, Los Angeles, CA. External link

Wu, C., Svilans, M., Makino, T., Glinski, J., Blaauw, C., Maritan, C., Knight, D. G., Fallahi, M., Templeton, I., Maciejko, R., & Najafi, S. I. (1992, April). Circular Grating Surface-Emitting Laser [Paper]. Integrated Photonics Research 1992, New Orleans, Louisiana, USA. External link

Sriram, S., Lamouche, G., & Najafi, S. I. (1990, July). Accurate analysis of ordinary and grating-assisted ion-exchanged glass waveguides [Paper]. Optoelectronic Devices and Applications, San Diego, CA, USA (10 pages). External link

Lamouche, G., & Najafi, S. I. (1989, April). Finite-Element Analysis Of Ion-Exchanged Channel Waveguides [Paper]. International Congress on Optical Science and Engineering, Paris, France. External link

Touam, T., Wu, C., Bélanger, M., Currie, J. F., & Najafi, S. I. (1988, September). Planar gaas Zn-diffused waveguides: fabrication, characterization and analysis [Paper]. SPIE Integrated Optical Circuit Engineering VI, Boston, MA, United states. External link

Patent

Farfad, M. A., Najafi, S. I., & Andrews, M. P. (2000). Solvent-assisted lithographic process using photosensitive sol-gel derived glass for depositing ridge waveguides on silicon. (Patent no. US6054253). External link

Patent Application

Pelissier, S., Blanc Pelessier, D., Najafi, S. I., & Andrews, M. P. (2001). Self-processing of diffractive optical components in hybrid sol-gel glasses. (Patent Application no. WO2001031401). External link

List generated on: Sun Jul 21 08:34:00 2024 EDT