Optical fiber stress long-term maintaining device

The invention discloses an optical fiber stress long-term maintaining device. The optical fiber stress long-term maintaining device is characterized by designing a quartz glass disc by taking quartz glass as a base material, winding an optical fiber along the edge of the quartz glass disc, stretching the optical fiber to apply prestress, and bonding and curing the optical fiber and the quartz glass disc by using optical epoxy glue to maintain the optical fiber stress. Because the quartz glass disc and the optical fiber material have the same thermal expansion coefficient, the optical fiber stress can be kept stable when the environment temperature changes drastically. Compared with a common optical fiber stress loading device which is easily influenced by temperature change to cause stresschange, the stress maintaining device is designed by adopting a quartz glass material, the stress of the optical fiber is not influenced by the temperature change, and long-term temperature impact can be borne; the transmiss