Abstract
This paper proposes a variable optical delay line based on the discrete harmonic oscillation in the waveguide lattice with a quadratic distribution of coupling coefficients. Theoretical analysis and numerical simulation have shown that the device design can achieve a time delay of up to 10 ns, with the resolution of 0.5 ns, and the 3-dB bandwidth over the whole C-band. It allows a data packet of up to 17 bits at the rate of 100 Gb/s. In this design, the propagation path is folded by up to five times (or ten times for the one-port design). Compared with the conventional fiber-delay-line buffer, this design has a small footprint (about 10 mm × 0.5 mm). A group of them can be paralleled and cascaded within a small area (e.g., 20 copies into 1 cm2) as enabled by the microfabrication. With further optimization, this design has a potential for interconnecting and signal processing applications in optical communications and computing.
Original language | English |
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Article number | 7273744 |
Pages (from-to) | 5095-5102 |
Number of pages | 8 |
Journal | Journal of Lightwave Technology |
Volume | 33 |
Issue number | 24 |
DOIs | |
Publication status | Published - 15 Dec 2015 |
Keywords
- Optical buffers
- optical computing
- optical delay lines
- optical planar waveguide components
- optical propagation in anisotropic media
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics