Space division multiplexing (SDM) is currently widely investigated in order to provide enhanced capacity thanks to the utilization of space as a new degree of multiplexing freedom in both optical fiber communication and on-chip interconnects. Basic components allowing the processing of spatial modes are critical for SDM applications. Here we present such building blocks implemented on the silicon-on-insulator (SOI) platform. These include fabrication tolerant wideband (de)multiplexers, ultra-compact mode converters and (de)multiplexers designed by topology optimization, and mode filters using one-dimensional (1D) photonic crystal silicon waveguides. We furthermore use the fabricated devices to demonstrate on-chip point-to-point mode division multiplexing transmission, and all-optical signal processing by mode-selective wavelength conversion. Finally, we report an efficient silicon photonic integrated circuit mode (de)multiplexer for few-mode fibers (FMFs).
This paper gives a review for our recent progress on SOI (Silicon-on-insulator)-compatible hybrid nanoplasmonic waveguides which enables a nano-scale light confinement as well as relatively long-distance guided-wave propagation. The strong polarization dependence of silicon hybrid nanoplasmonic waveguides makes it promising to realize on-chip polarization-handling devices with utlrasmall footprints, which is also summarized. Finally, energyefficient thermal-tuning is presented as an example to show the potential of using silicon hybrid nanoplasmonic waveguides as a promising platform to transfer and process both photonic and electronic signals along the same integrated circuit.
Two types of optical sensor based on one-dimensional Photonic Crystal (PhC) stack nanobeam cavity has been designed,
fabricated and characterized. One-dimensional PhC stack nanobeam cavity with measured Q-factors up to 27000 and a
sensitivity of 270nm/RIU has been demonstrated. Then, we introduce a finite width slot between two periodic arrays of
the dielectric stacks. Thus, the majority of optical field distributes in the slotted low-index area and the light matter
interaction with the analytes has been enhanced. A sensitivity of 410nm/RIU has been achieved while maintaining the
Q-factors near 104.
An ultra-compact TE-pass polarizer with an ultra-broad band is proposed theoretically and demonstrated experimentally
by utilizing a silicon hybrid plasmonic waveguide. The metal layer of the silicon hybrid plasmonic waveguide is
designed to have an F-P cavity as well as a Bragg grating so that the TM-polarized light is reflected efficiently while the
TE-polarized light goes through with very low loss. By utilizing the present structure with a metal Bragg grating, the
designed TE-pass polarizer is with a size of as small as 0.5 × 3.1 μμm2 and the theoretical extinction ratio is as high as 15 dB over a broad band of >200 nm.
Recently hybrid plasmonic waveguides have been proposed and attracted much attention as a good option to realize a nano-scale light confinement as well as a relatively long propagation distance. Furthermore, hybrid plasmonics waveguides offer a way to transfer and process both photonic and electronic signals along the same plasmonic circuit, which is desirable in order to combine the advantage of both photonics and electronics for high-speed signal processing and an easy realization of active components. In this paper, we give a review for our recent work on silicon hybrid nanoplasmonic waveguides and devices.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.