Single-pump multiwavelength hybrid raman-EDF laser using a non-adiabatic microfiber interferometer

Muhammad Faiz Ibrahim (Universiti Teknologi MARA)
Nani Fadzlina Naim (Universiti Teknologi MARA)
Mas Izyani Bt Md Ali (Universiti Teknologi MARA)

Indonesian Journal of Electrical Engineering and Computer Science
Vol 18, No 3: June 2020

This paper presents a multiwavelength fiber laser utilizing non-adiabatic tapered EDF based Mach Zehnder Interferometer (MZI) in hybrid Raman-EDF gains design with a linear cavity. A stable laser was obtained from the single pump with a 1497 nm wavelength through the employment of a 20:80 optical circulators and 99% reflective mirror. The generated backward propagating oscillates inside the laser cavity generate the stable multiwavelength output with 4 channels, which is coupled out via the 10:90 coupler and the output laser is characterized using an OSA with a resolution of 0.015 nm. The hybrid Raman-EDF gain is pumped from the external cavity by a Raman Pump Unit (RPU) and produced a stable multiwavelength laser output with SMSR of 28.9 dBm for 300 mW pump power, 30.7 dBm for 1000 mW pump power and 33.7 dBm for 1500 mW pump power.