Используйте «light-emitting diode» в предложении

1. The average incandescent full recharge will give a continuous operational time light-emitting diode (lED) based torch, for in-of approximately 2

2. The signal carried by a singlemode cable is generated by a laser and consists of only a single wavelength, while multimode signals are generated by a light-emitting diode (LED) and carry multiple wavelengths

3. Most fiber-optic applications use lasers only with single-mode cable, while the signals on multimode cables are produced by light-emitting diodes (LEDs)