Fiber optic couplers with a 2x2 configuration are essential for splitting or combining optical signals in telecommunications and data transmission applications. These couplers feature a range of technical specifications, including fused biconical taper and planar lightwave circuit types, and are available with single-mode or multi-mode fiber options. Leading suppliers like DK Photonics offer these couplers with FC connectors and various housing materials such as stainless steel and aluminum. On FindLight, buyers can compare detailed specifications, request pricing, and connect with manufacturers directly, all without the need for registration.