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We demonstrate a parallel plate waveguide (PPWG) based terahertz spectroscopy approach to characterize the electromagnetic properties of two-dimensional (2D) materials. The amount of absorption exponentially increases with the waveguide length, therefore, the minimum detectable conductivity of this method sensitively increases by simply increasing the length of the waveguide along which the THz wave...
This paper reports a compact optical wavelength tracker, which consists of an electrically controlled tunable micro-ring resonator and a flip-chip bonded photodiode. The input optical wavelength is measured and the wavelength change is tracked by analyzing the photocurrent variation of the photodiode. This wavelength tracker has compact size (0.5 mm × 1.5 mm), high resolution (3 pm), cost-effective...
ePIXfab brings silicon photonics within reach of European small and medium sized enterprises, thereby building on its track record and its integration into Europractice. To this end, ePIXfab offers affordable access to standardized active and passive silicon photonic IC and packaging technology, a path from design to manufacturing and hands-on training. Based on a consortium of major research institutes...
We report an experimental demonstration of a 3X-size, silicon waveguide-integrated electro-optic modulator with a record high extinction ratio exceeding 1dB/μm, extremely low insertion loss (−1dB) in the ON-state, and an ultra-broadband (>0.5μm) bandwidth based on free-carrier switching in ITO.
This paper reports a silicon-based micromachined optical power detector with on-chip measurement ability. The optical power is detected by an integrated electron-tunneling displacement transducer, in which optical force is employed as the bridge between optical energy and mechanical energy transition. Compared with the traditional optical power detectors, which are based on photo absorption, the proposed...
In this paper, an optical switch driven by the optical force is demonstrated based on Nanoelectromechanical system (NEMS) technology. The switch consists of a Mach-Zehnder interferometer (MZI) and a ring resonator. One of the MZI arms is suspended to enable optical switching by optical force induced displacement. The optical force is introduced by injecting a control light into the ring resonator...
Based on a hybrid-plasmon (HPP) platform, we report the first demonstrations of low-loss, deep-subwavelength waveguiding and plasmon semiconductor Nanolaser with room temperature operating, towards wavelength-scale photonic integrated circuits.
Based on a hybrid-plasmon (HPP) platform, we report the first demonstrations of low-loss, deep-subwavelength waveguiding and plasmon semiconductor Nanolaser with room temperature operating, towards wavelength-scale photonic integrated circuits.
This paper reports a novel silicon platform with integrated MEMS actuators, which is used for fine-positioning and locking of a ball-lens, to address the optical coupling issues in silicon photonics packaging. The fine-positioning and locking function of the ball-lens have been successfully demonstrated by the developed prototype silicon platform. The main adjusting actuator delivered a large force...
Ultrafast self-switching of spectral-amplitude-encoded 40 Gb/s DPSK signals is demonstrated for the first time. Switching between 21 ports with 15 nm maximum bin separation is achieved using a single correlator based on HNLF and an AWG.
We extend all-optical quasi-phase matching of high harmonic generation to 140-150 eV, where conventional phase matching is not possible. We also demonstrate, and present a model for, selective enhancement of a single quantum trajectory.
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