Coated optical fibres having improved features
a waveguide and optical fiber technology, applied in chemical vapor deposition coating, chemical/physical processes, surgical instrument details, etc., can solve the problem of non-uniform deposit thickness of coatings, irregular substrates, electroplating, etc., to prevent macro bending losses, reduce the effect of micro bending losses
Inactive Publication Date: 2015-11-26
ZDF
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Benefits of technology
The present invention relates to a new wave guide design that can be bent to a predetermined angle without significant energy loss. The wave guide includes a layered cladding that prevents bending loss when the wave guide is bent with a minimum radius of ten times the outer diameter. The wave guide also has a negligible macro-bending loss and is protected from recessed tips formed during use. The activation solution used in the invention provides a catalyst for plating the metal layers onto the surface. Overall, the invention provides an improved design for wave guides that allows for better bending capabilities and protection against damage during use.
Problems solved by technology
Frequently, electroplating an irregularly shaped substrate produces a coating having non-uniform deposit thicknesses because of varying distances between the cathode and anode of the electrolytic cell.
Method used
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example 1
[0128]The probe is cleaned by 3% w K2Cr2O7, H2SO4 (conc) solution, treated by chemical etching with 20% w HF (70%), 40% w H2SO4 (conc) etching solution at 50 C.° for 6 min and subsequently rinsed thoroughly with deionized water. The hydroxylated probe was immersed immediately into 4% w 3-aminopropyltrietoxysilane (APTS), 50:50 H2O:C2H5OH solution for 20 min at 60 C.° to form amino-propyl self-supported monolayers. Then, the probe was rinsed thoroughly with deionized water.[0129]a) The probe is sensitized and catalytically activated by immersion for 6-10 min into solution of activation (40 g / l SnCl2, 1 g / l PdCl2, 140 g / l KCl, 75 ml / l HCl), rinsed with deionized water, 2% NaOH, deionized water.[0130]b) The probe is immersed for 30-60 min t=40-50 C.° in an electroless Ag,Cu plating bath containing 2 g / l Ag as AgNO3, 12 ml / l NH4OH, sodium, potassium tartrate 1.5 g / l, Ethylendiamine 0.1 g / l, Diethyldithiocarbamate 0.001 g / l, CuSO4×5H2O 0.1 g / l.
[0131]A bright mirror Ag,Cu coating of 3 mic...
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Abstract
A waveguide for high efficiency transmission of high energy light useful in ablation procedures at predetermined bandwidths over predetermined distances comprising: an optical fiber core; a silanization agent; layered cladding surrounding the optical fiber core comprising: a first thin metal layer comprising at least two types of metals the first thin metal layer covalently bonded to the core and a second thin metal layer bonded to the second metal layer; and a catalyst component; wherein the silanization agent comprising organofunctional alkoxysilane molecule, such as 3-aminopropyltriethoxysilane (APTS), is a self supporting bridge between the surface of the optical fiber and the first metal layer; the first metal layer is uniformly chemisorbed onto the surface of the optical fiber by means of covalent Si—O—Si bonds with the optical fiber; further wherein the catalyst component derived from an activation solution for enhancing the layered cladding upon the optical fiber.
Description
FIELD OF INVENTION[0001]The present invention relates to electroless plated wave guides useful for ablation. More particularly, this invention pertains to a wave guide and production thereof.BACKGROUND[0002]Metal plating is a well-known process employed to alter the existing surface properties or dimensions of a substrate. A substrate may be plated for decorative purposes, to improve resistance to corrosion or abrasion, or to impart desirable electrical or magnetic properties to a substrate.[0003]There are various methods of plating, including electroplating and electroless plating. Electroless plating involves the deposition of a metallic coating from an aqueous bath onto a substrate by a controlled chemical reduction reaction which is catalysed by the metal or alloy being deposited or reduced. This process differs from electroplating in that it requires no external electrical charge. One positive feature of electroless plating over electroplating is the ability to plate a substant...
Claims
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IPC IPC(8): G02B6/036G02B6/44C23C18/32B01J31/02B01J27/13B01J27/135B01J27/10G02B6/02C23C18/16C03C25/1065
CPCG02B6/036G02B6/02033G02B6/4478C23C18/32B01J31/0274B01J27/13B01J27/135B01J27/10C23C18/165C23C28/02G02B6/02C23C18/1893C23C18/48G02B6/02395A61B2018/00547A61B2018/2222C03C25/109C23C18/1844C23C18/1639C23C18/1651C23C18/285C23C18/30C23C18/36
InventorZILBERMAN, ALEXANDERSOKOLOWA, ANGELIKAMIZRAHI, DAVID
OwnerZDF