Patent ID: 9134480
Filing Date: 2015-09-15
Classification: G02B,H02G,H05B

Abstract:
1. A heating groove for an optical fiber fusion splicer, comprising: a heating substrate of said heating groove which is a metal sheet with a heat conducting property, wherein an outer surface of the heating substrate includes sequentially printed elements from thick film screen printing, said sequentially printed elements including an insulating medium, at least one heating resistor, a transition point conductor, and a protection glass glaze on the outer surface of the heating substrate; wherein said at least one heating resistor includes two heating resistors, each heating resistor with a resistance of 4.7±0.5Ω and power density of 10-20 W/cm wherein said at least one heating resistor is made of a resistive material with a temperature coefficient of 1500 ppm±150 ppm/° C.; and wherein the resistance of said at least one heating resistor is distributed such that resistance at two ends thereof is larger than that at a center, and the resistance is reduced, gradually or by step, from two ends to the center.