Analysis and simulation on gain flattening filter of an erbium doped fiber amplifier for multi-channel WDM system

Shah, Astha; Mankodi, Parthesh

doi:10.1109/wispnet.2017.8299798

Cited by 3 publications

(1 citation statement)

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“…Among previous applications, the need for equalization in the emitted wavelengths of a fiber laser is especially important for telecommunications and sensing [5]. This equalization can be achieved by using complicated cavities and non-lineal effects [6], by using a wavelength-flat amplification media [7] or by using special gain flattening filters [8]. These methods complicate the laser structure, or increase the cost of the laser.…”

Section: Introductionmentioning

confidence: 99%

A Dual-Wavelength Fiber Laser Sensor with Temperature and Strain Discrimination

Sanchez-Gonzalez

Pérez-Herrera

Roldán-Varona

et al. 2022

Sensors

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This work presents a dual-wavelength C-band erbium-doped fiber laser assisted by an artificial backscatter reflector. This fiber-based reflector, inscribed by femtosecond laser direct writing, was fabricated into a single mode fiber with a length of 32 mm. The dual-wavelength laser obtained, centered at 1527.7 nm and 1530.81 nm, showed an optical signal-to-noise ratio over 46 dB when pumped at 150 mW. Another feature of this laser was that the power difference between the two channels was just 0.02 dB, regardless of the pump power, resulting in a dual emission laser with high equalization. On the other hand, an output power level and a central wavelength instability as low as 0.3 dB and 0.01 nm were measured, in this order for both channels. Moreover, the threshold pump power was 40 mW. Finally, the performance of this dual-wavelength fiber laser enhanced with a random reflector for sensing applications was studied, achieving the simultaneous measurement of strain and temperature with sensitivities around 1 pm/με and 9.29 pm/°C, respectively.

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Section: Introductionmentioning

confidence: 99%