ˈʌðɚ fˈɔːɹmz ʌv ˈɑːptɪkəl lˈɪŋk kæn ɪŋklˈuːd sˈɪŋɡəl"kˈʌlɚ" lˈɪŋks ˌoʊvɚɹ ɐ wˈeɪvlɛŋθdᵻvˈɪʒən mˌʌltɪplˈɛksɪŋ ˈɪnfɹəstɹˌʌktʃɚ, ænd slˈæʃ ɔːɹ lˈɪŋks ðæt jˈuːs ˈɑːptɪkəl ˈæmplɪfˌaɪɚz tə kˈɑːmpənsˌeɪt fɔːɹ ɐtˌɛnjuːˈeɪʃən ˌoʊvɚ lˈɔŋ dˈɪstənsᵻz.
Other forms of optical link can include single-"colour" links over a wavelength-division multiplexing infrastructure, and/or links that use optical amplifiers to compensate for attenuation over long distances.