A glass sword with a glowing light shining through it

A detailed and accurate illustration of light traveling through an optical fiber. The optical fiber is shown as a long, slender, and transparent cylindrical tube with a glowing core, representing the light pathway. The light beams are depicted entering the fiber at one end and reflecting off the inner walls in a clear zigzag pattern, demonstrating total internal reflection. These reflections guide the light smoothly from one end of the fiber to the other without scattering. The core of the fiber glows brightly in soft blue and white hues, while the surrounding cladding is visible but less prominent. The background is dark, enhancing the contrast and making the glowing light path and reflections within the fiber stand out. The image should capture the efficient transmission of light through the fiber, with no loss of intensity along the path.

verybadimagenegative_v1.3, ng_deepnegative_v1_75t, (ugly face:0.8),cross-eyed,sketches, (worst quality:2), (low quality:2), (normal quality:2), lowres, normal quality, ((monochrome)), ((grayscale)), skin spots, acnes, skin blemishes, bad anatomy, DeepNegative, facing away, tilted head, {Multiple people}, lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, worstquality, low quality, normal quality, jpegartifacts, signature, watermark, username, blurry, bad feet, cropped, poorly drawn hands, poorly drawn face, mutation, deformed, worst quality, low quality, normal quality, jpeg artifacts, signature, watermark, extra fingers, fewer digits, extra limbs, extra arms,extra legs, malformed limbs, fused fingers, too many fingers, long neck, cross-eyed,mutated hands, polar lowres, bad body, bad proportions, gross proportions, text, error, missing fingers, missing arms, missing legs, extra digit, extra arms, extra leg, extra foot, ((repeating hair))