Electronic textiles are fabrics that enable electronic components such as batteries, lights, sensors, and microcontrollers to be embedded in them.
Further Research of Optical Fiber
Fiber-Optic Communication - an overview | ScienceDirect Topics
Fiber-optic communication: https://en.wikipedia.org/wiki/Fiber-optic_communication
Principles of Optical Fiber Communications
per LED: DC 3V - 3.2V Volt 20 mA, Polarity (3 V)
Battery: 3.7V 2000mAh
Electric schematic should be paralleled, in theory I can wire 100 LEDs .
Energy in: 200mAh