Based on kinesiology research demonstrating that translation and rotation are inseparable actions in the physical world, we present Mushaca, a 3-degrees-of-freedom mouse that senses rotation in addition to traditional planar position. We present an optical realization of the Mushaca device based on two optical sensors and then evaluate the device through a series of controlled experiments. Our ...

We design an ultracompact optical isolator with normal incident geometry that operates with a bandwidth that is substantial for a device of this size. For operation in a telecommunication wavelength of 1.55 μm, the thickness of the device is less than 1 μm and the device supports an operating bandwidth of 400 GHz over which the minimum contrast ratio exceeds 25 dB. Our design utilizes guided re...

In this paper, we propose a saturable absorber (SA) device consisting on an in-fiber micro-slot inscribed by femtosecond laser micro fabrication, filled by a dispersion of Carbon Nanotubes (CNT). Due to the flexibility of the fabrication method, efficient and simple integration of the mode-locking device directly into the optical fiber is achieved. Furthermore, the fabrication process offers a ...

My current research portfolio consists of work ranging from nanoscale electro‐optic modulators to 40 square meter hybrid solar energy systems. A common theme that cuts across this 10 order of magnitude change in length scale is the coupling of fundamental optical materials and device physics to emerging applications with significant impact. The Photonic Materials and Device Lab (PMDL) is consta...

We demonstrate optical 2R regeneration in an integrated silicon device consisting of an 8-mm-long nanowaveguide followed by a ring-resonator bandpass filter. The regeneration process is based on nonlinear spectral broadening in the waveguide and subsequent spectral filtering through the ring resonator. We measure the nonlinear power transfer function for the device and find an operating peak po...

Boston A novel device architecture that detects not only light but also its polarization could substantially reduce the number of optical components in a range of systems. Using traditional semiconductor fabrication methods, researchers at Boston University have designed a single mesa device consisting of two vertically integrated photodetectors that differentially respond to incident polarizat...

The accelerating integration of microwave and optical components in modern optoelectronic systems stimulates comprehensive investigations of device operation and efficiency. This paper studies the optoelectronic conversion capabilities of sub-micron GaAs active devices in response to ultra-short illumination pulses. The physical phenomena involved in the photo-electronic effects are appropriate...

Electromagnetic field probes inevitably change the original field distribution to some extent when they are positioned close to a device. That change affects measurement accuracy and the device operation. We have developed optical magnetic field probes, which comprise a loop antenna element and an electro-optic crystal, to perform magnetic nearfield measurement with high accuracy in the GHz fre...