A Raman amplifier assembly includes a Raman amplifier configured to receive a signal from a signal source. The wearable tag includes a dielectric layer on the second elastic layer, a third elastic layer on the dielectric layer, wherein the third elastic layer is embedded with a second conductive circuit, wherein the dielectric layer comprises via holes that contain electric connections between the semiconductor chip and the first conductive circuit. Each semiconductor device comprises a substrate and a device pattern formed on a surface of the substrate. The holder is fastened to the motor vehicle.