In order to enable optical systems to operate with a high degree of compactness and reliability it is necessary to combine large number of optical functions in small monolithic structures. A development, somewhat reminiscent of that that took place in Integrated Electronics, is now beginning to take place in optics. The initial challenge in this emerging field, known appropriately as "Integrated Optics", is to demonstrate the possibility of performing basic optical functions such as light generation, coupling, modulation, and guiding in Integrated Optical configurations. The talk will review the main theoretical and experimental developments to date in Integrated Optics. Specific topics to be discussed include: Material considerations, guiding mechanisms, modulation, coupling and mode losses. The fabrication and applications of periodic thin film structures will be discussed.

Integrated optics

This book draws together the multifaceted work that has been done on frequency selective surfaces and provides a modern overview of the underlying theory and mathematics.

Frequency selective surfaces : analysis and design

Aspects of the subject disclosure may include, for example, a transmission device that includes at least one transceiver configured to modulate data to generate a plurality of first electromagnetic waves. A plurality of couplers are configured to couple at least a portion of the plurality of first electromagnetic waves to a transmission medium, wherein the plurality of couplers generate a plurality of mode division multiplexed second electromagnetic waves that propagate along the outer surface of the transmission medium. Other embodiments are disclosed.

Transmission device with mode division multiplexing and methods for use therewith

Aspects of the subject disclosure may include, for example, a transmission device that includes a first coupler that guides a first electromagnetic wave to a first junction to form a second electromagnetic wave that is guided to propagate along the outer surface of the transmission medium via one or more guided-wave modes. These mode(s) have an envelope that varies as a function of angular deviation and/or longitudinal displacement. Other embodiments are disclosed.

Guided-wave transmission device with diversity and methods for use therewith

Aspects of the subject disclosure may include, for example, a transmission device that includes a transmitter that generates a first electromagnetic wave to convey data, the first electromagnetic wave having at least one carrier frequency and corresponding wavelength. A coupler couples the first electromagnetic wave to a transmission medium having at least one inner portion surrounded by a dielectric material, the dielectric material having an outer surface and a corresponding circumference, wherein the coupling of the first electromagnetic wave to the transmission medium forms a second electromagnetic wave that is guided to propagate along the outer surface of the dielectric material via at least one guided-wave mode that can include an asymmetric mode, wherein the at least one carrier frequency is within a microwave or millimeter-wave frequency band and wherein the at least one corresponding wavelength is less than the circumference of the transmission medium. Other embodiments are disclosed.

Guided-wave transmission device and methods for use therewith

This paper describes the NRD guide (nonradiative dielectric waveguide) proposed as a new type of dielectric transmission line for millimeter-wave integrated circuits. After the operation principle and the modes of the NRD guide are explained briefly, the nonradiative and low-loss nature of practical importance are confirmed experimentally. Next, the behavior of the transmitted wave in a bend is studied. Configurations and characteristics of typical NRD guide circuit elements, such as a matched terminator, a directional coupler, a circulator, a beam lead diode mount and a Gunn diode oscillator also are discussed. Using these circuit elements, a transmitter and a receiver are fabricated at 35 GHz and their performances are evaluated. The dimensions of the transmitter and the receiver are as compact as 68 mm × 66 mm and 85 mm × 75 mm in area, respectively. The output power of the transmitter is 10 mW and the temperature coefficient of the frequency is 0.57 ppm/°C. The temperature coefficient of the receiver also is as small as −0.76 ppm/°C. The noise figure is measured to be 10.6 dB. This value is obtained by using Si diodes in the mixer. Finally, as particular applications of the NRD guide, a filter, a power divider, and a leaky-wave antenna are described.

Millimeter‐wave integrated circuits using nonradiative dielectric waveguide

A new type of high-speed amplitude shift-keying (ASK) transceiver has been developed in an integrated manner at 60 GHz by using the nonradiative dielectric waveguide (NRD-guide) technology. An emphasis is placed on the high-speed performance of the newly developed ASK modulator. The modulator uses a Schottky barrier diode (SBD), which has higher switching speed than a p-i-n diode. In addition, the operation principle of it is different from that of the conventional p-i-n diode modulator. A pair of NRD-guide transceivers have been fabricated and 400-Mb/s data-transmission test has been carried out successfully by using them.

High speed PCM transceiver based on the NRD guide technologies at 60 GHz band

An efficient design technique of nonradiative dielectric waveguide filters for use at millimeter wavelengths is developed. Filter stuctures considered here are a gap-coupled type and an altenating-width type. According to present theory, 3-pole, 0.1-dB Chebyshev ripple bandpass filters with a 2-percent bandwidth at a center frequency of 49.5 GHz were designed and fabricated with Teflon dielectric. Calculated and measured filter responses agree quite well, and excess insertion losses are found to be as small as 0.3 dB for both types of the fabricated filter circuits.

Design of Nonradiative Dielectric Waveguide Filters (Short Papers)

The nonradiative dielectric waveguide (NRD-guide) is a newly proposed dielectric waveguide which can substantially suppress radiation at curved sections and discontinuities and is applicable to great advantage for millimeter wave integrated circuits. Basic circuit components such as transitions between a metal waveguide and an NRD-guide, matched terminations, a ring resonator and a bandpass filter were fabricated with polystyrene material and tested successfully at 50 GHz. Measurements showed that each component worked as expected without suffering from undesirable radiation and interferences at all.

Nonradiative dielectric waveguide circuit components

Ľarticle decrit les resultats recents obtenus dans le domaine des circuits integres et des antennes utilisant des guides ďondes non rayonnants. Ľetude est centree sur la realisation ďantennes planaires pour ondes millimetriques alimentees par un guide dielectrique non rayonnant a fuites. Ľantenne planaire et le guide ďondes sont integres dans un boitier unique. Le dispositif ainsi realise est destine a fonctionner comme radar anticollision pour automobile.

Tsukasa Yoneyama

Papers

Millimeter‐wave integrated circuits using nonradiative dielectric waveguide

High speed PCM transceiver based on the NRD guide technologies at 60 GHz band

Design of Nonradiative Dielectric Waveguide Filters (Short Papers)

Nonradiative dielectric waveguide circuit components

Recent development in NRD-guide technology