Abstract
High power lasers (> +21dBm) have gradually become the common solution for signal transmitting systems including regional cable television, Fiber To The Home (FTTH), and gigabit passive optical networks (G- PONs) due to their ability to generate signals that can be transmitted over long distances. However, if protective design is not implemented in the facility at the client side, users may be exposed to health hazards such as eye damage from these high-power lasers. High-power optical adapters with laser shutter use metal masks to prevent eye exposure to direct laser beams. They have progressively replaced conventional optical adapters and entered the market mainstream. Our study uses the Elastic-Plastic theory together with parametric design to investigate the effect of geometry on the initial spring-back angle of a laser shutter. Once the force stabilizes, the angles of the initial spring back are found to be the same as the simulated results for several attempts. In our study, it is observed that factors including the thickness of the metal masking plate, the initial design angle, the stiffness of the material and the boundary conditions have significant influence on the spring back angle. These can be used as references in design control.
Highlights
In 1966, researchers Kao and Hockham [1] proposed the theory of fiber optics and presented its potential application
High power lasers (> +21dBm) have gradually become the common solution for signal transmitting systems including regional cable television, Fiber To The Home (FTTH), and gigabit passive optical networks (GPONs) due to their ability to generate signals that can be transmitted over long distances
Our study uses the Elastic-Plastic theory together with parametric design to investigate the effect of geometry on the initial spring-back angle of a laser shutter
Summary
In 1966, researchers Kao and Hockham [1] proposed the theory of fiber optics and presented its potential application. The common wavelengths used in today’s high power telecom lasers (1310 nm, 1550 nm, etc.) fall in the infrared, outside the visible portion of the spectrum When these high power laser beams are emitted from the fiber optical terminal, human eyes are unable to recognize the hazard [2,3,4]. Tekaslan [7] studied the material property of stamped stainless steels, investigating the effects of different plate thicknesses and horizontal angles on the spring back angles. The initial angle, bending radius, thickness, gap distance, and the stiffness of the material for the dust-proof laser shutter are evaluated and their effects on the spring back angle are studied. The effects of each factor on the spring-back value of the laser shutter are investigated
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