A large scale optical switch array based on guided-wave technology using banyan network architecture is demonstrated. Banyan network architecture is the simplest N×N network connecting a input port to all the output ports. A banyan network optical switch array serves as a base for constructing many classes of switch networks, as we propose in this report. We fabricated a 32×32 switch and measur...

A metallic photonic crystal filter has been demonstrated at terahertz frequencies, with the passband tuneable over the range 365 386 GHz. Tuning is achieved by a relative lateral shift of two metallic photonic crystal plates. Each plate comprises two orthogonal layers of gratings and integral mounting lugs. The plates are micromachined from silicon wafers then coated in gold to provide metallic...

We demonstrate single-mode ZBLAN optical fiber couplers. A controlled tapering procedure leads to coupling ratios of 5%/95% and 14%/86% at a wavelength 2200 nm, with insertion losses 1.6 dB 1.8 dB, respectively.

In this paper, a Ka/K-band antenna-feeding network in dual-circular polarization is reported. The design of the system was carried out view its monolithic manufacturing through selective laser melting AlSi10Mg alloy. As proof-of-concept for satellite telecommunication multi-beam applications, feeding operates K band (19.25, 20.75) GHz and Ka (27.0, 29.0) GHz. provides four rectangular-waveguide...

A conventional interdigital bandpass filter (BPF) is characterized by coupled and tapped lines affords low insertion loss (IL) easy fractional bandwidth (FBW) adjustment. However, the maximum FBW of limited to 30%, beyond that, its gap size increases, thereby rendering fabrication impractical on a standard printed circuit board. In addition, cannot be changed because it dictates operational fre...

A plastic, 95-GHz rectangular waveguide with an integrated plastic flange has been successfully demonstrated using micro hot embossing and electroplating technologies. Two prototype devices with integrated flanges on both ends have been tested using an Agilent PNA 5250 network analyzer. The prototype with non-metallized flange shows return loss s11 and insertion loss s21 values of −21.5 and −1....

We have developed new silicon-on-insulator waveguide designs for simultaneously achieving both low-loss optical confinement and electrical contacts, and we present a design methodology based on calculating the Bloch modes of such segmented waveguides. With this formalism, waveguides are designed in a single thin layer of silicon-on-insulator to achieve both optical confinement and minimal inser...

Employing a family of dimpled and slotted spherical resonators, set X-band waveguide bandpass filters (BPFs) is presented in this study. The resonators originated from with depression (hence, dimples are formed) cutting slots into the resonator shell. With large number experiments, combination using twisted coupling topology, slotting on results simultaneous low insertion loss (IL), good out-of...

With Q’s in the tens to hundreds of thousands, micromachined vibrating resonators are proposed as IC-compatible tanks for use in the low phase noise oscillators and highly selective filters of communications subsystems. To date, LF oscillators have been fully integrated using merged CMOS+microstructure technologies, and bandpass filters consisting of spring-coupled micromechanical resonators ha...