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http://dx.doi.org/10.3807/HKH.2008.19.1.025

Device Miniaturization using Butterfly Grating-Assisted MMI Couplers  

Ho, Kwang-Chun (Dept. of IC Eng., Hansung University)
Publication Information
Korean Journal of Optics and Photonics / v.19, no.1, 2008 , pp. 25-30 More about this Journal
Abstract
In this paper, a novel architecture for device miniaturization of multimode interference-based (MMI) couplers is proposed. The coupling length of $N{\times}N$ MMI couplers scales as the square of the MMI region width so that the use of these structures with large-N ports can require large chip size. To solve the design problem, the butterfly grating-assisted MMI couplers, that have smaller device dimensions than conventional MMI couplers, are discussed and evaluated. Numerical simulations and novel design rules for such structures derived through theoretical analysis are presented.
Keywords
Butterfly Grating-Assisted MMI Couplers; Device Miniaturization; Equivalent Networks;
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1 L. Soldano and E. Pennings, 'Optical multi-mode interference devices based on self-imaging: Principles and applications,' J. Lightwave Technol., vol. 13, pp. 615-627, 1995   DOI   ScienceOn
2 M. Bachmann, P. Besse, and H. Melchior, 'General selfimaging properties in NxN multimode interference couplers including phase relations,' Appl. Opt., vol. 33, pp. 3905-3911, 1994   DOI
3 D. Dai, W. Mei, and S. He, 'Using a tapered MMI to flatten the passband of an AWG,' Opt. Commun., vol. 219, pp. 233-239, 2003   DOI   ScienceOn
4 P. P. Sahu, 'Compact multimode interference coupler with tapered waveguide geometry,'Opt. Commun., vol. 277, pp. 295-301, 2007   DOI   ScienceOn
5 C. Herben, C. Vreeburg, J. Leijtens, H. Block, F. Groen, I. Moerman, J. Pedersen, and M. Smit, 'Chirping of an MMI-PHASAR demultiplexer for application in multiwavelength lasers,' IEEE Photon. Technol. Lett., vol. 9, pp. 1116-1118, 1997   DOI   ScienceOn
6 L. O. Lierstuen and A. Sudbo, '8-channel wavelength division multiplexer based on multimode interference couplers,' IEEE Photon. Technol. Lett., vol. 7, pp. 1034-1036, 1995   DOI   ScienceOn
7 L. Spiekman, Y. Oei, E. Metaal, F. Groen, I. Moerman, and M. Smit, 'Extremely small multimode interference couplers and ultrashort bends on InP by deep etching,' IEEE Photon. Technol. Lett., vol. 6, pp. 1008-1010, 1994   DOI   ScienceOn
8 D. Levy, Y. Li, R. Scarmozzino, and R. Osgood, Jr., 'A new design for ultracompact multimode interference-based 2x2 couplers,' IEEE Photon. Technol. Lett., vol. 10, pp.96-98, 1998   DOI   ScienceOn
9 손석용,호광춘,김영권, '광통신용 테이퍼 방향성 결합기의 설계특성', 대한전자공학회지,제36권11호, pp.18-26, 1999년 11월
10 S. T. Peng and A. Oliner, 'Guidance and Leakage Properties of a Class of Open Dielectric Waveguides: Part I-Mathematical Formulations,' IEEE Trans. MTT, vol. 29, no. 9, pp. 843-855, 1981   DOI