WAVELENGTH INSENSITIVE TUNABLE WAVELENGTH CONVERSION USING CASCADED SEMICONDUCTOR-LASERS

Input-wavelength-insensitive tunable wavelength conversion was achieve d in the range of 1530 to 1560 nm using cascaded semiconductor laser w avelength converters (a DFB laser and an SSG-DBR laser). The power pen alty in the wavelength conversion of input signal between 1530 and 155 5 nm, where the wavelength ranged between 1537 and 1557 nm, is less th an 1 dB for 5 Gbit/s signals.