1 Introduction The field of integrated surface plas-mon (SP) nanophotonics continues to develop rapidly due to the considerable advantages of SPs over traditional integrated photonic structures. The high degree of confinement of SPs at a single interface allows for various easily-fabricated single-interface waveguide designs [1 – 4]. Di-electric loaded SP waveguides [1] represent a promising ap...

Design, fabrication, packaging, and characterization of a high finesse Ti:LiNbO3 integrated optical ring resonator are reported. First results of rotation rate sensing are presented. Introduction Optical rotation rate sensors utilizing the Sagnac effect are attractive devices, which in contrast to their mechanical counterparts have no moving parts [1]. Active ring laser gyroscopes and passive f...

We propose and investigate theoretically the use of bi-directional propagation light in silica integrated coupled waveguide structures for linear optical processing fiber-coupled photons. show that class operations can be implemented such a system is given by symmetric unitary matrices. present how an arbitrary 4 × coupler this form realized sequence more fundamental 2 couplers single-waveguide...

A photonic integrated circuit (PIC) comprised of an 11 cm long multimode speckle waveguide, a 1 × 32 splitter, and linear grating coupler array is fabricated utilized to receive 2 GHz radio-frequency (RF) signal bandwidth from 2.5 4.5 using compressive sensing (CS). Incoming RF signals are modulated onto chirped optical pulses which input the waveguide. The waveguide produces random projections...

The design and experimental results of a wide-band monolithic reflection-type phase shifter are presented in this paper. The phase shifter fabricated on Ba0 6Sr0 4TiO3 (BST)/sapphire consists of a coplanar waveguide (CPW) Lange coupler, a series resonated LC termination, and a bias network. The CPW Lange coupler results in a power split of 3.5 dB 0.5 dB in the range of 1.6–3.2 GHz. The BST inte...

We report a technique to substantially boost the spectral bandwidth of a conventional waveguide grating coupler by using a solid immersion cylindrical lens at the aplanatic condition to create a highly anamorphic beam and reach a much larger numerical aperture, thus enhancing the spectral bandwidth of a free-space propagating optical beam coupled into a single-mode planar integrated optical wav...

Grating couplers are used to efficiently couple light from an optical fibre to a silicon waveguide as they allow light to be coupled into or out from any location on the device without the need for cleaving. However, using the typical surface relief grating fabrication method reduces surface planarity and hence makes further processing more difficult. The ability to manufacture high quality mat...

In order to overcome the main drawbacks of coaxial, waveguide, and stripline couplers, the analysis and the design of a compact coaxial-to-microstrip directional coupler convenient for power and antenna control application, are presented using the method of moments (MoM) in two dimensions. This technique is adapted to study the complex configuration of the line’s system, which does not have a s...

We study the propagation of linear waves and solitons in an array of optical waveguides with an embedded defect created by a pair of waveguides with gain and loss satisfying the socalled parity-time (PT ) symmetry condition. We demonstrate that in the case of small soliton amplitudes, the linear theory describes the scattering of solitons with a good accuracy. We find that the incident high-amp...

The performance of a fully optimized optical add/drop multiplexer (OADM), based on null couplers and tilted Bragg gratings, is studied in detail. It is shown that maximization of the device performance involves three main optimization steps. First, the waveguide asymmetry ( 2 1 ratio) should be optimized in order to minimize the extinction ratio of the unwanted mode at the null coupler waist. S...