Journal
OPTICS EXPRESS
Volume 22, Issue 4, Pages 4692-4698Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.22.004692
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Funding
- NanoSquare program
- Funds for the Development of Human Resources in Science and Technology
- JSPS KAKENHI [23686015]
- Future Pioneering Projects
- CPHoST program
- Grants-in-Aid for Scientific Research [23686015] Funding Source: KAKEN
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We demonstrated 32-channel drop filters with 100 GHz spacing consisting of arrayed nanocavities and a waveguide in a photonic crystal silicon slab. Changing the lattice constant of the nanocavities on the subnanometer scale successfully controlled the drop wavelengths at 100 GHz spacing in the wavelength range between 1510 and 1550 nm. The device size was as small as 15 mu m x 270 mu m, and the variation in drop wavelengths was less than 0.3 nm in terms of standard deviation. We also present a movie showing the operation of the drop filter, demonstrating that the arrayed nanocavities have the potential for developing ultracompact 100 GHz spaced filters in a dense wavelength division multiplexing system. (C) 2014 Optical Society of America
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