Low insertion loss: FBT couplers are designed to minimize the amount of light lost when it passes through the coupler. This is important because the more light that is lost, the weaker the signal becomes.
High coupling ratio: FBT couplers can be designed with a range of coupling ratios, from a few percent up to 50% or more. This means that a small portion of the light passing through the coupler can be coupled out, while the majority of the light continues on its path.
Compact size: FBT couplers are relatively small in size, making them suitable for use in tight spaces and applications where space is at a premium.
High reliability: FBT couplers are made from high-quality materials and are designed to withstand harsh environmental conditions. This makes them highly reliable and suitable for use in a wide range of applications.
Low cost: FBT couplers are generally less expensive than other types of couplers, making them a cost-effective choice for many applications.