Multi-Wavelength Lasing with SOA and AWG for Linear-Cavity Fiber Sensor
نویسندگان
چکیده
Optical fiber sensing has been extensively studied in various areas such as aging deterioration measurement of constructed building, seismic measurement, environmental measurement. Optical fiber sensing systems are classified into two configurations. One consists of an optical source, an optical fiber transmission line, and sensing elements. The other consists of a fiber lasing system including sensing element in the cavity [1-3]. Compared to the former, the latter systems have advantages such as higher resolution for wavelength-shift induced by sensing element, and higher signalto-noise ratio (SNR). By employing a fiber Bragg grating (FB) as the sensing element, reflecting center wavelength can be shifted due to environmental temperature or tension.
منابع مشابه
SOA-Based Triple-Wavelength Ring Laser
We propose and experimentally demonstrate a triple-wavelength fiber ring laser using a semiconductor optical amplifier (SOA) in conjunction with an array waveguide grating (AWG). The experimental results show three lasing lines with an adjustable wavelength separation and a large optical signal-to-noise ratio under room temperature. The three channels operate at 1531.5 nm, 1532.3 nm and 1533.1 ...
متن کاملComposite Cavity Fiber Laser with Asymmetric Output Intensity and Wavelength
The composite cavity fiber laser (CCFL) is relatively simple in its fabrication, as it is essentially three wavelength matched Bragg gratings in a section of doped fiber. By using internal feedback with unequal sub-cavity lengths, unidirectional CCFLs with significantly asymmetric output power from its two outputs can be achieved. Preliminary results also show that it is possible for the lasing...
متن کاملTunable single-frequency fiber laser based on the spectral narrowing effect in a nonlinear semiconductor optical amplifier.
A wavelength-tunable single-frequency fiber laser based on the spectral narrowing effect in a nonlinear semiconductor optical amplifier (NL-SOA) is proposed and experimentally demonstrated. The single-frequency operation is achieved based on the spectral narrowing effect resulted from the inverse four-wave mixing in a NL-SOA. By incorporating the NL-SOA in the fiber laser cavity, single-frequen...
متن کاملA Simple Fiber-bragg-grating Sensor System Based on a Linear-cavity Fiber Laser
A simple fiber-Bragg-grating (FBG) sensor system based on a linear-cavity fiber laser is proposed and experimentally demonstrated. The lasing wavelength shift resulting from the temperature variation on this sensing element is discriminated by two FBGs. These two FBGs, acting as wavelength discriminators, are used to increase the real-time measurement range for monitoring the temperature variat...
متن کاملQuantum dot SOA/silicon external cavity multi-wavelength laser.
We report a hybrid integrated external cavity, multi-wavelength laser for high-capacity data transmission operating near 1310 nm. This is the first demonstration of a single cavity multi-wavelength laser in silicon to our knowledge. The device consists of a quantum dot reflective semiconductor optical amplifier and a silicon-on-insulator chip with a Sagnac loop mirror and microring wavelength f...
متن کامل