Rayleigh-based raman fiber laser with passive erbium-doped fiber for secondary pumping effect in remote l-band erbium-doped fiber amplifier

• Main Authors: Abu Bakar, M.H., Adikan, Faisal Rafiq Mahamd, Mahdi, M.A.
• Format: Article
• Language: English
• Published: Institute of Electrical and Electronics Engineers (IEEE) 2012
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.um.edu.my/4655/1/Abu_Bakar-2012-Rayleigh-Based_Raman.pdf; http://eprints.um.edu.my/4655/
• Institution: Universiti Malaya

This work focuses on a secondary pumping scheme for remote L-band erbium-doped fiber amplifier (R-EDFA) generated by integrating Rayleigh-based ultralong Raman fiber laser (ULRFL) with a section of passive erbium-doped fiber (EDF). A selective wavelength reflector combined with Rayleigh feedback in the transmission span forms the ULRFL cavity while the passive EDF deployed at the end of the span converts the ULRFL into a secondary C-band pump. Optimum ULRFL wavelength is determined by tuning the selective wavelength reflector across the C-band region. Combination of R-EDFA gain, Raman amplification, and passive EDF provides gain improvement as high as 15.5 dB over conventionally pumped R-EDFA with minimal optical signal-to-noise ratio penalty.