Browse > Article
http://dx.doi.org/10.5370/JEET.2009.4.2.287

Mach-Zehnder Type Tandem Optical Switch/Modulator using a Single-Mode Interconnecting Waveguide and Its Switching Characteristics  

Choi, Young-Kyu (Dept. of Electronic Engineering, Faculty of Engineering, Silla Univerity)
Publication Information
Journal of Electrical Engineering and Technology / v.4, no.2, 2009 , pp. 287-291 More about this Journal
Abstract
In this paper, an optical switch/modulator is designed and its light propagating characteristics analyzed using a simplified BPM. The distinctive feature of this switch/modulator is that all its waveguide branches are designed as single-mode. The principle of the device is based on the coupled mode theory in the Y-junction interconnecting waveguide. In spite of the fact all waveguides are designed as single-mode, by adjusting the interconnecting waveguide length'of the device the same characteristics as existing up to date devices are obtainable. Numerical results show that the switching characteristics periodically depend upon an interconnecting waveguide length with a spatial of about $150^{{\mu}m}$ in the $Ti:LiNbO_3$ step index waveguide. The design concept would therefore be utilized effectively in fabricating a monolithic high density optical integrated circuit.
Keywords
Optical switch/modulator; BPM; Waveguide design;
Citations & Related Records

Times Cited By SCOPUS : 3
연도 인용수 순위
1 Weissman, Z., Hardy, A., and Marom, E., 'ModeDependent radiation loss in Y-junctions and directional couplers', IEEE., J Quantum Electron., vol. 25, No. 6, June, 1989
2 Szustalkowski, M., and Marciniak, M., ' Light power division in a monomode Ti:$LiNbO_3$ waveguide Yjunction power-combiner-power-divider sequence', Optics Commun. vol. 81 , No. 1, 2, Feb. 1991
3 Leuthold, J., Ecker, J., Gamper, E., Besse, P.A., and Melchior, H., 'Multimode interference couplers for the conversion and combining of zero- and first-order modes', J Lightwave Technol, vol. 16, pp. 1228-1239, July, 1998   DOI   ScienceOn
4 Silberg, Y., Perlmutter, P., and Baron, J. E., 'Digital optical switch', Appl. Phys. Lett., vol. 51, pp. 1230-1232, 1987   DOI
5 Papuchon, M., and Roy, A., 'Electrically active optical bifurcation; BOA', Appl. Phys. Lett. vol. 31 , no. 4, pp. 266-267, Aug. 1977   DOI
6 Tasi, C. S., Kim, B., and EI-Akkari, F. R., 'Optical channel waveguide switch and coupler using total intemal reflection' , IEEE. J Quantμm Electron., vol. QE-14, no. 7, pp. 513-517, July, 1978
7 Martin, W. E., 'Anew waveguide switch/modulator for integrated optics', Appl. Phys. Letters, vol. 26, no. 10, pp. 562, May 1975
8 Fujiwara, T., Izutsu, M., Murata, H., Tanabe, Y., and Sueta, T., ' Analysis of SHG in fonn of cerenkov radiation,' IEICE Tech. Report (Japanese), vol. 88, no. 416, pp. 77-83, June 1989
9 Thylen, L., 'The beam propagation method: an analysis of its applicability,' Optical and Quantum Electronics, vol. 15, no. 10, pp. 433-448, Sept. 1983   DOI
10 Gonnan, T., and Haxha, S., 'Design optimization of Zcut lithium niobate electrooptic modulator with profiled metal electrodes and waveguide', IEEE, J. Lightwave Tech., vol. 25, no. 12, pp. 3722-3728, Dec. 2007
11 Yi-Kuei, and Wang, Way-Seen, 'Design and fabrication of sidewalls-extended electrode configuration for ridged lithium niobate electrooptical modulator', IEEE, J. Lightwave Tech., vol. 26, no. 2, pp. 286-290, Jan. 2008   DOI   ScienceOn
12 Haxha, S., Rahman, B. M. A., and Grattan, K. T. V., ' Bandwidth estimation for ultra-high-speed lithium niobate modulators'’, Appl. Opt. , vol. 42, no. 15, pp. 2674-2682, May 2003   DOI
13 Tomeh, M. M., Goasguen, S., and EI-Ghazaly, S. M., 'Time-domain optical response of an electrooptic modulator using FDTD', IEEE Trans. Microw. The ory Tech., vol. 49, no. 12, pp. 2276-2281, Dec. 2001   DOI   ScienceOn
14 Leuthold, J., Besse, P. A., Ecker, J., Gamper, E., Dulk, M., and Melchior, H., ' All-optical space switches with gain and principally ideal extinction ratios', IEEE. J Quantum Electron., vol. 34, pp. 622-633, Apr. 1998   DOI   ScienceOn
15 Haruna, M., and Koyama, J., ' Electrooptical branchmg waveguide switches and the application to 1x4 optical switching networks', IEEE. J. Lightwave Tech vol. LT-1 No. 1, pp. 223-227, Mar. 1983