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This work investigates two types of multiwavelength Brillouin fiber laser configurations. These configurations are ring-cavity multi-wavelength Brillouin fiber laser employs fiber Bragg grating and S-shaped multiwavelength Brillouin fiber laser. The two arrangements comprise of 10 km long single mode fiber as a gain medium and operate in the C-band region. Replacing the S-Shaped with Bragg grating fiber has led to a loss reduction in the ring-cavity multiwavelength Brillouin fiber laser and subsequently generated higher number Brillouin Stokes (BS) signals. The maximum of 33 BS signals with ∼0.08 nm (∼10 GHz) spacing is obtained. Optical signal to noise ratio of about 15 dB is observed at output coupling ratio of 70%, when 1550 nm of Brillouin pump is launched into the ring-cavity multiwavelength Brillouin fiber laser employs fiber Bragg grating. In contrast, due to the limitation of high cavity losses, only 17 BS signals with ∼0.16 (20 GHz) spacing are generated from the S-shaped multi-wavelength Brillouin fiber laser. These findings contribute new insights and profiles of the multi-wavelength Brillouin fiber laser employs fiber Bragg grating that has the capability to reduce cavity losses while generating a high number of Brillouin Stokes signals.

We experimentally demonstrate unidirectional propagation of multi-wavelength Brillouin fiber laser system with additional fiber Bragg grating. The configuration is arranged in a ring resonator by utilizing five different Brillouin gain mediums. In this experiment, the input Brillouin pump power was varied in order to maximize the generated Brillouin Stokes signals based on the respective fiber lengths. The influence of these controllable parameters leads to the correlation between of Brillouin Stokes signals and optical-signal-to-noise-ratio. In this case, at 10 km of single mode fiber the maximum of 38 Brillouin Stokes signals were generated together with 15.07 dB of average optical-signal-to-noise-ratio when the 17 dBm Brillouin pump power was launched into the ring resonator.

A ring-cavity multi-wavelength Brillouin fiber laser by employing a fiber Bragg grating and dispersion compensating fiber was experimentally demonstrated. The multi-wavelength Brillouin fiber laser has been analyzed at different output coupling ratios at 1550 nm of Brillouin pump wavelength. A ring-cavity multi-wavelength Brillouin fiber laser has been designed with a 16 km long of dispersion compensating fiber which acts as gain medium for stimulated Brillouin scattering effect. Dispersion compensating fiber is designed to have small core size and has higher nonlinear coefficient. As a result, 8 Brillouin Stokes signals were produced at maximum Brillouin power of 21 dBm and output coupling ratio of 80%. The best performance of output coupling ratio was determined by 70% with the highest of signal to noise ratio at 38.39 dB.

The development was conducted with three configurations of L-Band EDFA, L-Band EDFA utilising Single FBG and Dual Stage L-Band EDFA utilising Dual FBG. The configurations utilising the FBG using 35 meter M-12 Fibercore EDF as the gain medium to amplify the input signal power in the L-band region. The gain enhancement has shown by the Dual Stage L-Band EDFA utilising Dual FBG by injecting low input signal power of -10 dBm. The flat amplitude of OSNR at 33.358 dB was produced at injected wavelength from 1570 nm to 1605 nm.

Three XOR photonics logic gate configurations namely semiconductor optical amplifier-Mach Zender interferometer cross phase modulation (SOA-MZI XPM), SOA-MZI cross gain modulation (XGM) and terahertz optical asymmetrical demultiplexer (TOAD) XOR are analysed and compared in terms of generated power, optical signal-to-noise ratio (OSNR) values and bit error rate (BER) signal quality. The highest generated power is possessed by the TOAD at 23.5 dBm, the SOA-MZI XPM showed the most extinction ratio or OSNR with 109.6 dB whereas the best BER is recorded in the SOA-MZI XGM at 4.42 x 10-22.

In this paper, we experimentally investigated the performance of ring cavity multi-wavelength Brillouin fiber laser utilizing fiber Bragg grating which operated in the C-band wavelength region. The combination of stimulated Brillouin scattering and selective wavelengths gave a new invention in the optical fiber communication. Five different lengths of single mode fiber are used in order to get the best gain medium for stimulated Brillouin scattering effect. Up to 33 of Brillouin Stokes signals and 31 of anti-Stokes signals were obtained when 10 km fiber length was used in the laser system. The average value optical signal to noise ratio of 15 dB has been achieved. The broadening bandwidth of Brillouin Stokes signals also occurred at the center wavelength of 1550 nm based on the 3 dB bandwidth of 5 nm fiber Bragg grating.

An efficient multi-wavelength Brillouin fiber laser incorporating fiber Bragg grating is presented by using the ring cavity technique. With the utilization of fiber Bragg grating’s reflectivity, up to maximum 28 Brillouin Stokes signals with 15.65 dB of average optical signal to noise ratio are generated with constant downshifted frequency of 0.08 nm. The laser system consumes 18 dBm of amplified Brillouin pump power and 90 % of the output coupling ratios at 11 km of single mode fiber. The Brillouin pump wavelength was fixed at 1550 nm corresponds to the center wavelength of fiber Bragg Grating. The optical signal to noise ratio was also observed to be not less than 13.05 dB at 18 dBm of amplified Brillouin pump power in all cases of the output coupling ratios.

A compact multi-wavelength Brillouin fiber laser exploiting fiber Bragg grating that provides a high number of Brillouin Stokes signals and acceptable average of the optical signal to noise ratio has been experimentally demonstrated. This configuration performed by using the ring cavity technique with different lengths of Brillouin gain medium. The operational principles are both based on the combination of stimulated Brillouin scattering effect and multiple four wave mixing processes. The improvement of 38 Brillouin Stokes signals and 35 anti-Stokes signals have been achieved by utilizing 10 km of single mode fiber and 90% of the output coupling ratio.

This paper is focusing on simulation and analyzed of S-band multi-wavelength Brillouin–Raman fiber laser performance utilizing fiber Bragg grating and Raman amplifier in ring cavity by using Optisystem software. Raman amplifieraverage power model is employed for signal amplification. This laser system is operates in S-band wavelength region due to vast demanding on transmitting the information. Multi-wavelength fiber lasers based on hybrid Brillouin-Raman gain configuration supported by Rayleigh scattering effect have attracted significant research interest due to its ability to produced multi-wavelength signals from a single light source. In multi-wavelength Brillouin–Raman fiber, single mode fiber is utilized as the nonlinear gain medium. From output results, 90 % output coupling ratio has ability to provide the maximum average output power of 43 dBm at Brillouin pump power of 20 dBm and Raman pump power of 14 dBm. Furthermore, multi-wavelength Brillouin–Raman fiber laser utilizing fiber Bragg grating and Raman amplifier is capable of generated 7 Brillouin Stokes signals at 1480 nm, 1510 nm and 1530 nm.

In this report, we propose a simple technique of the single wavelength linear-cavity Brillouin fiber laser by using minimal components. The Brillouin gain medium is provided by 11-km long of Single Mode Fiber. The enhancement of experiment is done by using Fiber Bragg Grating and without Fiber Bragg Grating. Reflectivity bandwidth from Fiber Bragg Grating is exploited to improve the performance of laser system. With the involvement of cavity feedback and wavelength selectivity, Fiber Bragg Grating directly influenced the signal power. The maximum output Brillouin power was found to be 17.25 dBm at 1550 nm by utilizing Fiber Bragg Grating while 16.33 dBm were reported without utilizing Fiber Bragg Grating. The optical-signal-to-noise-ratio of 68.097 dB has been obtained from the laser system. A stable high optical-signal-to-noise-ratio and narrow linewidth linear cavity single-wavelength Brillouin fiber laser is done by free running of self-lasing cavity mode within the C-band wavelength region.

The simulation demonstrated an S-shaped multi-wavelength Brillouin-Raman Fiber Laser employing Raman amplifier in the cavity. Raman amplifier- average power model is employed for signals amplification. This configuration is operated in the S-band wavelength region with tuning range between 1460 nm to 1530 nm. A laser signal at 1500 nm with 4 dBm of output power act as the Brillouin pump, while at output power of 90 mW with 1425 nm of wavelength act as the Raman pump. As a result, at 10 km of single mode fiber and output coupling ratio of 90%, 7 outputs of Brillouin Stokes signals are obtained with maximum output power of 33.88 dBm. Meanwhile, maximum gain values at 38. 07 dBm is recorded at 90 mW of injected Raman pump power. It is notable that the Raman gain broadening occurs around 1500 nm to 1530 nm in S-band wavelength region.

A multi-wavelength Brillouin fiber laser with the implementation of reflective fiber Bragg grating is developed. In this ring cavity architecture, the fiber laser system is performed by the stimulated Brillouin scattering effect and four-wave mixing process. An improvement in the number Brillouin Stokes signal and average of the optical signal to noise ratio were generated through the reflection process of fiber Bragg grating. Due to the optimization of output coupling ratio from 10% to 60%, the highest Brillouin Stokes signal of 17 and average optical signal to noise ratio of 14.7 dB were recorded at 60% of the output coupling ratio. The amplified Brillouin pump power of 16.5 dBm at 1550 nm of Brillouin pump wavelength was injected into the laser system. A constant line spacing of 0.08 nm at each of the Brillouin Stokes signals was also recorded.

This paper experimentally demonstrated a ring cavity multi-wavelength Brillouin fiber laser employing fiber Bragg grating (FBG) that operated in the C-band region. The FBG plays a significant role to reflect signals and filter selected wavelengths. A number of generated Brillouin Stokes (BS) signals and tuning range ability were investigated. A 9[Formula: see text]km length of single mode fiber was utilized to provide a Brillouin gain medium for generating stimulated Brillouin scattering effect. In this work, at optimum output coupling ratio of 90% and Brillouin pump (BP) wavelength of 1550[Formula: see text]nm, up to a maximum of 26 BS signals were recorded by injecting 63.1[Formula: see text]mW of amplified BP powers. The BS signals were also tunable within the ranges of 1544–1556[Formula: see text]nm in accordance with the FBG properties at 3[Formula: see text]dBm bandwidth of 5[Formula: see text]nm.