scholarly journals Erbium Ring Fiber Laser Cavity Based on Tip Modal Interferometer and Its Tunable Multi-Wavelength Response for Refractive Index and Temperature

2018 ◽  
Vol 8 (8) ◽  
pp. 1337 ◽  
Author(s):  
Yanelis Lopez-Dieguez ◽  
Julian Estudillo-Ayala ◽  
Daniel Jauregui-Vazquez ◽  
Luis Herrera-Piad ◽  
Juan Sierra-Hernandez ◽  
...  
Keyword(s):  
Refractive Index ◽  
Fiber Laser ◽  
Low Cost ◽  
Ring Cavity ◽  
Laser Cavity ◽  
Single Mode ◽  
Cost Effective ◽  
Single Mode Fiber ◽  
Fiber Structure ◽  
Multi Wavelength

A tunable multi-wavelength fiber laser is proposed and demonstrated based on two main elements: an erbium-doped fiber ring cavity and compact intermodal fiber structure. The modal fiber interferometer is fabricated using the cost-effective arc splice technique between conventional single-mode fiber and microfiber. This optical fiber structure acts as a wavelength filter, operated in reflection mode. When the refractive index and temperature variations are applied over the fiber filter, the ring laser cavity provides several quad-wavelength laser spectra. The multi-wavelength spectra are tuned into the C-band with a resolution of 0.05 nm. In addition, the spectra are symmetric with minimal power difference between the lasing modes involved, and the average of the side mode suppression ratio is close to 37 dB. This laser offers low-cost implementation, low wavelength drift, and high power stability, as well as an effect of easy controllability regarding tuned multi-wavelength.

Lasing characteristics of 10 GHz signal spacing in a ring cavity multi-wavelength Brillouin fiber laser employing fiber Bragg grating

2016 ◽  
Vol 25 (04) ◽  
pp. 1650049 ◽  
Author(s):  
A. Zakiah Malek ◽  
N. A. M. Ahmad Hambali ◽  
M. H. A. Wahid ◽  
M. M. Shahimin
Keyword(s):  
Fiber Laser ◽  
Fiber Bragg Grating ◽  
Brillouin Scattering ◽  
Ring Cavity ◽  
Single Mode ◽  
Gain Medium ◽  
Single Mode Fiber ◽  
Bragg Grating ◽  
Output Coupling ◽  
Multi Wavelength

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.

Study on Structure Optimization of Multi-Wavelength Brillouin-Erbium Doped Fiber Laser

2013 ◽  
Vol 734-737 ◽  
pp. 2792-2795
Author(s):  
Xue Fang Zhou ◽  
Shan Yuan
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Ring Cavity ◽  
Single Mode ◽  
Fiber Amplifier ◽  
Single Mode Fiber ◽  
Erbium Doped Fiber Amplifier ◽  
Erbium Doped ◽  
Access Mode ◽  
Multi Wavelength

A ring cavity multiwavelength Brillouin erbium-doped optical fiber laser （EDFL）based on the stimulated brillouin scattering effects and linear gain mechanism of erbium-doped fiber was demonstrated, in which single mode fiber was used as Brillouin gain medium and the Stokes signal was amplified by using the erbium-doped fiber amplifier, so that the laser can produce a stable multi-wavelength output at room temperature. Through the study and analysis of the position of the circular and coupler and the access mode of the coupler, we found that they both had influence on the output of the brillouin-erbium fiber laser. Then we have done some experiments at the Brillouin pump power of 14 dBm and the 980 nm pump power of 23 dBm, and single mode fiber length of 10km. The results showed that the access mode of the coupler affects the output of the brillouin-erbium fiber laser obviously. The detailed test results and the corresponding explanation were given.

scholarly journals Stable Multi-Wavelength Thulium-Doped Fiber Laser With Two Cascaded Single-Mode-Four-Mode-Single-Mode Fiber Interferometers

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 1197-1204
Author(s):  
Ying Guo ◽  
Fengping Yan ◽  
Ting Feng ◽  
Qi Qin ◽  
Luna Zhang ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Multi Wavelength ◽  
Fiber Interferometers

Switchable and tunable linear cavity erbium-doped fiber laser based on FBGs embedded in Sagnac rings

Laser Physics ◽  
2021 ◽  
Vol 32 (1) ◽  
pp. 015101
Author(s):  
Gangxiao Yan ◽  
Weihua Zhang ◽  
Peng Li ◽  
Qiuhao Jiang ◽  
Meng Wu ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Low Cost ◽  
Single Mode ◽  
Optical Signal ◽  
Single Mode Fiber ◽  
Hole Burning ◽  
Linear Cavity ◽  
Erbium Doped ◽  
Optical Fiber Sensing ◽  
Birefringence Effect

Abstract A switchable and tunable erbium-doped fiber laser with a linear cavity based on fiber Bragg gratings embedded in Sagnac rings is proposed and experimentally verified. Due to the stress birefringence effect and the polarized hole burning effect, which are introduced into the single-mode fiber in the polarization controllers (PCs) by the PCs, the designed laser can achieve seven kinds of laser-states output including three kinds of single-wavelength laser states, three kinds of dual-wavelength laser states and one kind of triple-wavelength laser state. The optical signal-to-noise ratios of the output wavelengths are all higher than 52 dB, and the wavelength shifts are all less than 0.04 nm. Furthermore, the temperature tuning of the wavelength range is also researched, which is about 1.2 nm. Due to advantages, such as low cost, simple structure, easy switching and multiple laser states, the designed laser has great application potential in laser radar, optical fiber sensing and so on.

MULTIWAVELENGTH LIGHT SOURCE WITH INTEGRATED DFB LASER ARRAY AND STAR COUPLER FOR WDM LIGHTWAVE COMMUNICATIONS

1994 ◽  
Vol 05 (01) ◽  
pp. 91-109 ◽  
Author(s):  
C.E. ZAH ◽  
J. GAMELIN ◽  
B. PATHAK ◽  
F. FAVIRE ◽  
P.S.D. LIN ◽  
...  
Keyword(s):  
Low Cost ◽  
Single Mode ◽  
Cost Effective ◽  
Single Mode Fiber ◽  
Laser Source ◽  
Photonic Integration ◽  
Laser Array ◽  
Laser Arrays ◽  
Wavelength Division ◽  
Multiwavelength Laser

We discuss the advantages of wavelength-division-multiplexed (WDM) lightwave systems and the need for monolithically integrated multiwavelength laser arrays. For WDM light-wave systems to be cost effective, it is important to reduce the per-wavelength component cost. By photonic integration, the packaging and the control circuitry will be shared among all the wavelengths. In this paper, we review the multiwavelength laser arrays, the array coupling, and the photonic integration approach. We have demonstrated the monolithic integration of a 21-wavelength multi-quantum-well distributed-feedback laser array with a star coupler and optical amplifiers on the same chip. Operating a packaged module under CW operation, we obtained as many as 15 individual wavelengths simultaneously launched from one output port of the star coupler of this integrated chip into one lensed single-mode fiber. We also characterized the thermal and the electrical crosstalk from the neighboring lasers. This integrated chip stands a good chance of being a compact and low-cost multiwavelength laser source for future WDM lightwave systems.

Refractive index sensor based on ultrafine tapered single-mode nocladding single-mode fiber structure

2019 ◽  
Vol 48 ◽  
pp. 297-302 ◽  
Author(s):  
Mizhen Zhang ◽  
Guixian Zhu ◽  
Lidan Lu ◽  
Xiaoping Lou ◽  
Lianqing Zhu
Keyword(s):  
Refractive Index ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Refractive Index Sensor ◽  
Fiber Structure

scholarly journals Intensity Demodulated Refractive Index Sensor Based on Front-Tapered Single-Mode-Multimode-Single-Mode Fiber Structure

Sensors ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 2396 ◽  
Author(s):  
Jing Kang ◽  
Jiuru Yang ◽  
Xudong Zhang ◽  
Chunyu Liu ◽  
Lu Wang
Keyword(s):  
Refractive Index ◽  
High Stability ◽  
Beam Propagation Method ◽  
Single Mode ◽  
Relative Sensitivity ◽  
Single Mode Fiber ◽  
Continuous Operation ◽  
Refractive Index Sensor ◽  
Fiber Structure ◽  
Drawing Technique

A novel intensity demodulated refractive index (RI) sensor is theoretically and experimentally demonstrated based on the front-tapered single-mode-multimode-single-mode (FT-SMS) fiber structure. The front taper is fabricated in a section of multimode fiber by flame-heated drawing technique. The intensity feature in the taper area is analyzed through the beam propagation method and the comprehensive tests are then conducted in terms of RI and temperature. The experimental results show that, in FT-SMS, the relative sensitivity is −342.815 dB/RIU in the range of 1.33~1.37. The corresponding resolution reaches 2.92 × 10−5 RIU, which is more than four times higher than that in wavelength demodulation. The temperature sensitivity is 0.307 dB/°C and the measurement error from cross-sensitivity is less than 2 × 10−4. In addition, fabricated RI sensor presents high stability in terms of wavelength (±0.045 nm) and intensity (±0.386 dB) within 2 h of continuous operation.

Refractive index sensing characteristic of single-mode-multimode-single-mode fiber structure based on self-imaging effect

2015 ◽  
Vol 54 (10) ◽  
pp. 106103 ◽  
Author(s):  
Xuekun Bai ◽  
Haotian Wang ◽  
Shaofei Wang ◽  
Shengli Pu ◽  
Xianglong Zeng
Keyword(s):  
Refractive Index ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Fiber Structure ◽  
Refractive Index Sensing
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