Radio-on-multimode fiber systems based on VCSELs and external light injection technique

A radio-on-multimode fiber (MMF) system based on 1.55-μm vertical-cavity surface-emitting lasers (VCSELs) and an external light injection technique is proposed and demonstrated. Low error vector magnitude, third-order intermodulation distortion to carrier ratio, and bit-error-rate values were obtained in our proposed radio-on-MMF systems. Using VCSELs as optical sources in radio-on-MMF systems are very attractive, as they are relatively simple to fabricate and potentially low cost. Such a proposed radio-on-MMF system is suitable for the short-haul microwave optical link.