Instantaneous switching method for optical transmission line and switching element used therefor

Abstract

Abstract PURPOSE:To instantaneously switch an optical transmission line by allowing two or more other transmission means to confront one transmission means so as to be movable relatively. CONSTITUTION:A first chip 1 of a rectangular parallelopiped shape and two pieces of second chips 2, 3 of the same rectangular parallelopiped shape are provided, and each abutting surface where the chip 1 and the chips 2, 3 are opposed is confronted so as to be movable relatively in the direction as indicated with an arrow. As for the chips 1-3, waveguides 1a-3a being transmission means for transmitting an optical signal are formed in its longitudinal direction. The waveguides 1a-3a are formed by embedding directly germanium dope quartz glass and an optical fiber. Also, to the rear ends of the chips 1-3, an optical fiber F which is coupled optically with the respective waveguides 1a-3a is connected. Accordingly, when the waveguide 1a and 2a are confronted and abut on each other, and a transmission of an optical signal is being executed in the direction as indicated with an arrow A B, and at the time of a transfer due to a fault, etc., when the chip 1 is shifted to the right side in the figure and made to abut on the chip 3, the waveguide 1a and 3a are confronted and abut on each other, and the transmission of the optical signal can be switched instantaneously in the direction as indicated with an arrow A B'.

Inventors

• 👤 Takao Shioda
• 👤 塩田　孝夫
• 👤 Hiromi Hidaka
• 👤 日高　啓視
• 👤 Koichi Takahashi
• 👤 浩一 高橋
• 👤 Takeru Fukuda
• 👤 福田　長

Bibliographic Details