… high efficiency optical signal coupling between low refractive index waveguides and high
refractive index waveguides. optical fiber waveguides have been employed to convey …

… This enables the use of integrated optical waveguides in … Our previous waveguide delay
demonstrations are highly … which produces a different refractive index in each waveguide plane. …

… circuits very much as waveguides and coaxials are used for … as we discuss the transmission
properties of different structures. … how a small change of the refractive index between the …

… optical signal among different levels of photonic devices, a low loss vertical waveguide coupler
… to achieve because the refractive index of a-Si depends greatly on deposition conditions …

… -based directional couplers using the effective-refractiveindex method … In a very broad
wavelength range (1000–1650 nm), we … and coupling losses for different waveguide widths are …

… of very compact integrated optoelectronic circuits at low cost. We demonstrate basic integrated
optical components fabricated in the high refractive … Y-branches with different angles α. …

… , the refractive index … large difference between the effective indices of the LP01 modes of
the SMW and the TMW results in a very small Cr01 (< –55 dB), and, therefore, the crosstalk from …

… to waveguides characterised by very low losses (below 0.05 dB/cm), large mode area (that
couples to standard optical … A part from the refractive index, these materials have different …

… , although it exhibits a very low-loss value. For this reason, … -sectional refractive index profile
of the waveguide is assumed … , the optimum waveguide parameters are different from those …

… deeply etched waveguides that are suitable for very compact … determined from Fabry-Perot
measurements on different guide … loss is very small because of the large horizontal refractive…