| Original Articles |
|
|
|
|
Flexible Control of Light Propagation Using a Novel Photonic Crystal Hetero-Waveguide Based on Silicon-on-Insulator Slab |
| WANG Yue, WU Yuan-Da, ZHANG Jia-Shun, HU Xiong-Wei |
| R&D Center of Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083 |
|
| Cite this article: |
|
WANG Yue, WU Yuan-Da, ZHANG Jia-Shun et al 2008 Chin. Phys. Lett. 25 4023-4025 |
|
|
|
|
Abstract We demonstrate a photonic crystal hetero-waveguide based on silicon-on-insulator (SOI) slab, consisting of two serially connected width-reduced photonic crystal waveguides with different radii of the air holes adjacent to the waveguide. We show theoretically that the transmission window of the structure corresponds to the transmission range common to both waveguides and it is in inverse proportion to the discrepancy between the two waveguides. Also the group velocity of guided mode can be changed from low to high or high to low, depending on which port of the structure the signal is input from just in the same device, and the variation is proportional to the discrepancy between the two waveguides. Using this novel structure, we realize flexible control of transmission window and group velocity of guided mode simultaneously.
|
| Keywords:
42.70.Qs
42.82.Et
|
|
|
Received: 20 August 2008
Published: 25 October 2008
|
|
| PACS: |
42.70.Qs
|
(Photonic bandgap materials)
|
| |
42.82.Et
|
(Waveguides, couplers, and arrays)
|
|
|
|
|
|
[1] Yablonovitch E 1987 Phys. Rev. Lett. 58 2059
[2] John S 1987 Phys. Rev. Lett. 58 2486
[3] Notomi M, Shinya A, Yamada K, Takahashi J I, Takahashi C
and Yokohama I 2002 IEEE J. Quantum Electron. 38 736
[4] Song B S, Noda S, Asano T and Akahane Y 2005 Nat.
Mater. 4 207
[5] Shinya A, Mitsugi S, Kuramochi E and Notomi M 2006
Opt. Express. 14 12394
[6] Ozaki N, Kitagawa Y, Takata Y, Ikeda N, Watanabe Y,
Mizutani A, Sugimoto Y and Asakawa K 2007 Opt. Express
15 7974
[7] Djavid M, Monifi F, Ghaffari A and Abrishamian M S 2008
Opt. Commun. 281 4028
[8] Shinya A, Notomi M, Yokohama I, Takahashi C, Takahashi J I
and Tamamura T 2002 Opt. Quant. Electron. 34 113
[9] Tang H X, Zuo Y H, Yu J Z and Wang Q M 2006 Chin.
Phys. Lett. 23 2999
[10] Notomi M, Yamada K, Shinya A, Takahashi J, Takahashi C
and Yokohama I 2001 Phys. Rev. Lett. 87 253902-1
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
