Thermal regulating VOA

• Main Authors: WU LI, XIAO PENG, XU YUNBING
• Format: Patent
• Language: Chinese; English
• Published: 01.01.2019
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

The invention discloses a thermal regulating VOA. The thermal regulating VOA includes an optical fiber collimator, a light reflecting structure, a temperature regulating part and at least one wedge angle piece composed of a high photothermal coefficient crystal. The optical fiber collimator and the light reflecting structure are disposed along a direction of propagation of an optical path; the atleast one wedge angle piece is disposed between the optical fiber collimator and the light reflecting structure; and the at least one wedge angle piece adjusts the temperature of the wedge angle pieceby the temperature regulating part. The thermal regulating VOA enables one or more wedge angle pieces composed of high photothermal coefficient crystals such as a Si wedge angle piece to be insertedbetween a dual fiber collimator and the light reflecting structure (such as a reflecting lens), and enables an incident light passing through the wedge angle piece and a deflection angle of a reflected light passing through the