Observation and Comparison of Multiwavelength Generation Erbium Doped Fibre Ring Laser Utilising Photonic Crystal Fibre With Zero Dispersion at 1040nm and 1550 nm

M.N. Abdullah 1,2, S. Shaari 1, S. Menon 1, A.A. Ehsan 1, O. Zakaria 2

1. Institute of Microengineering and Nanoelectronic, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, MALAYSIA
   
2. National Metrology Laboratory, SIRIM Berhad, Lot PT 4803, Bandar Baru, Salak Tinggi 43900 Sepang, Selangor, MALAYSIA.
   

We conducted an experiment to demonstrate the generation of multi wavelength by incorporating fibre Bragg gratings (FBGs) and photonic crystal fibre (PCF) which has zero dispersion of 1040 nm and 1550 nm in erbium doped fibre ring laser (EDFRL). The multiwavelength was generated at gain bandwidth  EDFRL setup. The results showed a good agreement of less than 0.03 % of peaks wavelength generation

based on both experimental set-up. The set-up  also shares good repeatability of peaks wavelength generation of 0.01 nm and power deviation of 0.15 dBm. Nevertheless, experimental set-up with PCF of  ZDW at 1550 has generated multi wavelength phenomenon by 30% effectively compared to PCF with ZDW at 1040 nm by 30% effectively. The results  produced an impactful finding whereby the multiwavelength was clearly observed.

Fig. 1. EDFRL generated spectrum which produced multi wavelength through the experimental setup with PCF ZDW at (a) 1550 nm and (b) 1040 nm

Fig. 2. Peaks wavelength and power deviation output based on 160 minutes duration

Table 1. EDFRL generated peaks wavelength through the experimental setup with PCF ZDW at 1550 and 1040 nm

Through this comparative study, we concluded that the agreement of peaks wavelength generated through application of EDFRL via PCF ZDW at 1550 nm and 1040 nm is 0.03%. The repeatibility which potrayed the stability performance on both experiments of peaks wavelength with an average deviation of  0.02 nm and

power deviation of 0.13 dBm. More power at 30% incremental is needed to stimulate multi wavelength phenomenon at EDFRL using PCF ZDW at 1040 compared to PCF ZDW at 1550 nm. This setup has achieved remarkable results by producing multi wavelength signals using FBGs and PCF with zero dispersion mismatch from transmission window based on EDFRL.