Indoor FTTH drop cable (GJXFH, GJXH, GJXKH) adopt a butterfly-shaped flat structure, with the optical fiber unit in the center of the optical cable, two parallel reinforcements (metal steel wire, non-metallic FRP or KFRP) placed on both sides, and finally extruded with low smoke. Indoor FTTH drop cable (GJXFH, GJXH, GJXKH) adopt a butterfly-shaped flat structure, with the optical fiber unit in the center of the optical cable, two parallel reinforcements (metal steel wire, non-metallic FRP or KFRP) placed on both sides, and finally extruded with low smoke. This single structural difference separates indoor butterfly cables (FRP only) from their outdoor, self-supporting counterparts. Butterfly cables almost universally use bend-insensitive single-mode fiber — specifically types covered by the ITU-T G. It is named after its unique shape, which resembles that of a butterfly. In this essay, we will examine the advantages and disadvantages of indoor butterfly-shaped optical cables in detail. It offers an efficient and economical solution for deploying fiber in FTTH network. Central loose tube cables and self-supporting FTTH drop cables are desinged for outdoor aerial distribution. Butterfly FTTH drop cable incorporates the indoor soft cable and the. Optical fiber drop cable, also known as FTTH (Fiber to the Home) cable, serve as the critical final segment in fiber optic network.