S-BAND BRILLOUIN/ERBIUM FIBER LASER FOR DWDM APPLICATION

2006 ◽  
Vol 15 (03) ◽  
pp. 309-313 ◽  
Author(s):  
SULAIMAN WADI HARUN ◽  
CHENG XIAU SAN ◽  
HARITH AHMAD
Keyword(s):  
Fiber Laser ◽  
Wavelength Division Multiplexing ◽  
Wavelength Band ◽  
Short Wavelength Band ◽  
Wavelength Division ◽  
Optical Wavelength ◽  
Brillouin Pump ◽  
Erbium Doped ◽  
Multi Wavelength ◽  
Output Laser

A multi-wavelength Brillouin erbium fiber laser (BEFL) which operates in a short wavelength band (S-Band) is demonstrated using a depressed cladding erbium-doped fiber (EDF). Two 80/20 couplers were used in the system for internal feedback of generated stokes signal in order to produce cascaded Brillouin stokes for multi-wavelength operation. It generates an optical wavelength comb with spacing of approximately 0.084 m. A stable output laser of up to 7 lines was obtained with a Brillouin pump of 3.5 mW, a 980 nm pump laser of 200 mW and an EDF length of 20 m. The BEFL has the potential to be used in the future dense wavelength division multiplexing (DWDM) communication system.

scholarly journals Erbium-Doped Fiber Amplification Assisted Multi-Wavelength Brillouin-Raman Fiber Laser

2018 ◽  
Vol 7 (4.35) ◽  
pp. 854
Author(s):  
Aiman Ismail ◽  
Hazwani Mohammad Helmi ◽  
Md Zaini Jamaludin ◽  
Fairuz Abdullah ◽  
Abdul Hadi Sulaiman ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Wavelength Division Multiplexing ◽  
Brillouin Scattering ◽  
Laser Cavity ◽  
Raman Fiber Laser ◽  
Wavelength Division ◽  
Erbium Doped ◽  
Multi Wavelength ◽  
Stimulated Brillouin ◽  
Raman Pump

Multi-wavelength fiber laser based on Brillouin scattering in optical fiber has the potential of application in dense wavelength division multiplexing (DWDM) system. To enhance the performance of the fiber lasers, researchers proposed usages of erbium, or Raman amplification techniques. In an earlier work, it was reported that extracting residual Raman pump out of the laser cavity improves the performance of a multi-wavelength Raman fiber laser. In this paper, we proposed a setup utilizing the residual Raman pump to pump an erbium-doped fiber in multi-wavelength Brillouin-Raman fiber laser. Results show that the additional erbium-doped fiber is capable of amplifying the propagating Brillouin Stokes by more than 15-dB. This in turn helps in achieving lower stimulated Brillouin threshold and subsequently allow for higher number of Brillouin Stokes lines to be generated.   

Performance Evaluation of Proposed WDM Optical Link Using EDFA and FBG Combination

2019 ◽  
Vol 40 (2) ◽  
pp. 101-107 ◽  
Author(s):  
Deepti Ahlawat ◽  
Payal Arora ◽  
Suresh Kumar
Keyword(s):  
Wavelength Division Multiplexing ◽  
Chromatic Dispersion ◽  
Fiber Amplifier ◽  
Q Factor ◽  
Wavelength Band ◽  
Modulation Formats ◽  
Erbium Doped Fiber Amplifier ◽  
Wavelength Division ◽  
Modulation Format ◽  
Erbium Doped

Abstract Analysis of wavelength division multiplexing (WDM) system utilizing erbium-doped fiber amplifier (EDFA) has been carried out by many researchers. In this paper, the performance analysis of 8-channel WDM system utilizing EDFA and fiber Bragg grating (FBG) combination is carried out in a wavelength band 1546–1552 nm at 10 Gbps. The performance of three apodization functions (Uniform, Gaussian and Tanh) of FBG is compared using return-to-zero (RZ) and non-return-to-zero modulation formats at fiber lengths 50, 60, 70 and 80 km. Also, the performance of FBG is compared for both aspects: with chirp and without chirp for grating lengths 5–10 mm. The Gaussian apodized and linearly chirped FBG outperformed the other two in compensating chromatic dispersion. Optimum values of Q-factor are also obtained using linearly chirped FBG with RZ modulation format at 10 mm of grating length.

Multi-Wavelength Fiber Laser Based on a High Finesse Fiber Ring Filter and Multimode FBG

2011 ◽  
Vol 130-134 ◽  
pp. 4036-4040
Author(s):  
Hong Gang Pan ◽  
Xiu Feng Yang ◽  
Jin Long Yu ◽  
Zheng Rong Tong ◽  
Fang Fang Wei
Keyword(s):  
Fiber Laser ◽  
Room Temperature ◽  
Cavity Length ◽  
Spectral Response ◽  
Fiber Ring ◽  
Narrow Bandwidth ◽  
Erbium Doped ◽  
Multi Wavelength ◽  
Output Laser ◽  
High Finesse

A multi-wavelength fiber laser with a narrow bandwidth based on an erbium-doped fiber ring filter and multimode fiber Bragg grating (MM-FBG) has been proposed, a high finesse fiber ring filter are introduced .The fiber ring filter consists of two optical couplers and a section of weak pumped erbium-doped fiber (EDF）. Thanks to the delay of cavity length and the gain generated by the EDF, the filter has spectral response with a high finesse. The incorporation of the fiber ring filter leads to the suppression of undesirable mode and makes the output laser narrower bandwidth. With 980 nm LD pumped, at the room temperature, the space of the two wavelengths is 0.07nm, which improved the effect of the filter.

Switchable generation of multi-wavelength continuous wave and square-wave pluses in a bidirectional Erbium-doped fiber laser

2021 ◽  
Vol 143 ◽  
pp. 107302
Author(s):  
Wenxiang Cui ◽  
Xuefang Zhou ◽  
Meihua Bi ◽  
Guowei Yang ◽  
Miao Hu ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Continuous Wave ◽  
Square Wave ◽  
Erbium Doped ◽  
Multi Wavelength

Investigations of Different Amplifiers in 16 × 40 Gb/S WDM System

2019 ◽  
Vol 40 (4) ◽  
pp. 341-346
Author(s):  
Kulwinder Singh ◽  
Karan Goel ◽  
Kamaljit Singh Bhatia ◽  
Hardeep Singh Ryait
Keyword(s):  
Wavelength Division Multiplexing ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Fiber Amplifiers ◽  
Erbium Doped Fiber Amplifier ◽  
Wavelength Division ◽  
Transmission Distance ◽  
Erbium Doped ◽  
Eye Opening ◽  
Eye Closure

Abstract Different fiber amplifiers such as semiconductor optical amplifier, erbium-doped fiber amplifier and erbium ytterbium-co-doped fiber amplifier (EYCDFA) are investigated for 16×40 GB/s wavelength division multiplexing system. Various performance parameters including Q-factor, bit error rate, jitter, eye opening and eye closure are observed and analyzed. It is reported that EYCDFA is a better choice among the tested amplifiers. The proposed system is also investigated in terms of transmission distance.

Multi-wavelength Brillouin erbium-doped fiber laser sensor with high tunable temperature sensing coefficient

2018 ◽  
Vol 51 (1) ◽  
Author(s):  
Zhou Xuefang ◽  
Li Zengyang ◽  
Ge Chaoqun ◽  
Fan Bing ◽  
Wang Tianshu
Keyword(s):  
Fiber Laser ◽  
Temperature Sensing ◽  
Laser Sensor ◽  
Erbium Doped ◽  
Multi Wavelength

MoS2-wrapped microfiber-based multi-wavelength soliton fiber laser

2017 ◽  
Vol 31 (32) ◽  
pp. 1750303 ◽  
Author(s):  
Feifei Lu
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Saturable Absorber ◽  
Optical Communications ◽  
Fiber Lasers ◽  
Tunable Filter ◽  
Linear Birefringence ◽  
Erbium Doped ◽  
Potential Applications ◽  
Multi Wavelength

The single-, dual- and triple-wavelength passively mode-locked erbium-doped fiber lasers are demonstrated with MoS2 and polarization-dependent isolator (PD-ISO). The saturable absorber is fabricated by wrapping an MoS2 around a microfiber. The intracavity PD-ISO acts as a wavelength-tunable filter with a polarization controller (PC) by adjusting the linear birefringence. Single-wavelength mode-locked fiber laser can self-start with suitable pump power. With appropriate PC state, dual- and triple-wavelength operations can be observed when gains at different wavelengths reach a balance. It is noteworthy that dual-wavelength pulses exhibiting peak and dip sidebands, respectively, are demonstrated in the experiment. The proposed simple and multi-wavelength all-fiber conventional soliton lasers could possess potential applications in numerous fields, such as sensors, THz generations and optical communications.

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