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Telemetry Fiber Collimator The fiber collimator developed and produced by Ysensor for use in gas telemetry instruments is a fiber optic transmitter that utilizes tunable diode laser absorption spectroscopy (TDLAS) technology. Serving as a signal transmitter for gas telemetry instruments, it can be likened to the sense of touch and vision for sensors, featuring characteristics such as concentrated spot energy, fast transmission speed, and high transmittance. In addition, its small and compact size provides a significant advantage, leading to its increasing use in portable telemetry or ranging instruments.