Paper
1 March 2006 Highly dispersive photonic crystal waveguides and their applications in optical modulators and true-time delay lines
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Abstract
An ultra-compact silicon electro-optic modulator was experimentally demonstrated based on highly dispersive silicon photonic crystal (PhC) waveguides. Modulation operation was demonstrated by carrier injection into an 80 μm-long silicon PhC waveguide of a Mach-Zehnder interferometer (MZI) structure. The π phase shift driving current, Iπ, across the active region is as low as 0.15 mA, which is equivalent to a Vπ of 7.5 mV when a 50 Ω impedance-matched structure is applied. The modulation depth is 92%. Highly dispersive PhC fibers were previously proposed to reduce the payload of true-time delay (TTD) modules for phased-array antenna (PAA) systems. The payload reduction factor is proportional to the enhanced dispersion of highly dispersive PhC fibers. An ultra-large dispersion of -1.1×104 ps/nm•km with the full width at half maximum (FWHM) of 40 nm was numerically simulated from a dual core PhC fibers. The payload reduction factor of the TTD module is as high as 110 compared to that using conventional dispersion compensation fibers (D = -100 ps/nm•km).
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yongqiang Jiang, Tao Ling, Lanlan Gu, Wei Jiang, Xiaonan Chen, and Ray T. Chen "Highly dispersive photonic crystal waveguides and their applications in optical modulators and true-time delay lines", Proc. SPIE 6128, Photonic Crystal Materials and Devices IV, 61280Y (1 March 2006); https://doi.org/10.1117/12.643080
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Cited by 2 scholarly publications.
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KEYWORDS
Waveguides

Dispersion

Optical fibers

Silicon

Modulators

Photonic crystals

Modulation

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