Evanescent optics

Splice-free PM coupler trees and assemblies are available in custom configurations having very low backreflection and insertion loss. P Mini-Coupler Spec Sheet ( see Reliability tests). Fiber is stretched and compressed by piezo wafers elastically mounted on the sides of an oval form.

The fiber is stretched only on the straight portion of the oval, . Spliceless coupler arrays are based on the Model 954P fixed ratio PM coupler.

In general, we use PM fiber to preserve plane polarized light when launched on one axis of that fiber.

Couplers are cascaded together without splices to .

Model 9Specifications: The 9piezo fiber stretcher, with up to 4mm stretch, has application to fringe scanning and delay lines. Manufactured using the same technique as the Model 954P fixed ratio coupler, but with SM non-PM fiber. Industrial Measurement Systems.

Product Data Model 9Piezo-Electric Controller. PM and SM non-PM Fiber Patch cords. Patch cords available using either PM or SM fiber sleeved with 900um hytrel sleeving or 3mm sleeving. Splice free, cascaded assemblies, of polarization maintaining components, having. Fiber optic signal paths that include splices, connectors, PM couplers, and . For optical pumping applications in PM or non-PM fibers.

Fiber facets are created slightly above the substrate surface so that only the facets themselves are in optical contact. This is shown in the figure below, where the . The Wave Guide, Modes and Evanescent Tails. What is the power limit in polished couplers? The phase of the cross coupled light determines the degree of plane and elliptical polarization components with . Even when there in fact is an electromagnetic wave . Development of an evanescent optical integrated sensor in the mid-infrared for detection of pollution in groundwater or seawater. Polarization and particle size dependence of radiative forces on small metallic particles in evanescent optical fields.

Evidences for either repulsive or attractive gradient forces. The microspheres are observed to form one-dimensional chains oriented parallel to the direction of propagation of the beams. Evanescent optical fields are also scattered by particles and exert radiation forces which can be used for optical near-field manipulations.

The scattering of evanescent waves and hence the . It is shown, that the sensitivity of the effective refractive index on the cladding index in evanescent optical waveguide sensors, can be larger than unity. In particular, propagating optical waves (photons) carry momentum and longitudinal spin determined by the wave vector and circular polarization, respectively. Here we show that exactly the opposite can be the case for evanescent optical waves. Compact Evanescent Optical Switch and Attenuator with Electromechanical Actuation.

Labachelerie, and Hiroyuki Fujita, Member, IEEE . The ends of the fiber are tapered up to facilitate the coupling of light into and out of the probe. The design permits the adjustment of the interaction length by more than an order of magnitude to accommodate the optical . In this paper we report on the design and fabrication of an Evanescent Optical Waveguide Sensor (EOWS) using silicon oxynitride (SiON) as the core layer on silica-silicon wafer and its implementation for rapid detection of adulterant traces in pure petrol incorporating composite planar waveguide geometry.