scholarly journals A Comparative Study of Thermal Impact on Erbium Doped Distributed Feedback Fiber Laser Output Power

2020 ◽  
Vol 12 (2) ◽  
pp. 1-9 ◽  
Author(s):  
Jian Guo ◽  
Haifeng Qi ◽  
Zhiqiang Song ◽  
Jiasheng Ni ◽  
Chang Wang ◽  
...  
Keyword(s):  
Comparative Study ◽  
Fiber Laser ◽  
Output Power ◽  
Distributed Feedback ◽  
Laser Output ◽  
Laser Output Power ◽  
Thermal Impact ◽  
Erbium Doped

Competition between various techniques for power scaling of fiber laser output power

2013 ◽  
Author(s):  
Maryam Ilchi-Ghazaani ◽  
Parviz Parvin ◽  
Vajiheh Daneshafrooz
Keyword(s):  
Fiber Laser ◽  
Output Power ◽  
Laser Output ◽  
Laser Output Power ◽  
Power Scaling

scholarly journals Temperature Sensor Using a Multiwavelength Erbium-Doped Fiber Ring Laser

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Silvia Diaz ◽  
Noe San Fabian ◽  
Abian B. Socorro-Leranoz ◽  
Ignacio R. Matias
Keyword(s):  
Fiber Bragg Grating ◽  
Output Power ◽  
Temperature Sensor ◽  
Ring Laser ◽  
Laser Output ◽  
Bragg Grating ◽  
Laser Output Power ◽  
Fiber Ring Laser ◽  
Fiber Ring ◽  
Erbium Doped

A novel temperature sensor is presented based on a multiwavelength erbium-doped fiber ring laser. The laser is comprised of fiber Bragg grating reflectors as the oscillation wavelength selecting filters. The performance of the temperature sensor in terms of both wavelength and laser output power was investigated, as well as the application of this system for remote temperature measurements.

Variation of laser output power with coupling ratio and magnification

2013 ◽  
Vol 25 (4) ◽  
pp. 832-840
Author(s):  
刘万发 Liu Wanfa ◽  
桑凤亭 Sang Fengting
Keyword(s):  
Output Power ◽  
Laser Output ◽  
Laser Output Power ◽  
Coupling Ratio

Influence of biosafety materials of the laser output power

2020 ◽  
Author(s):  
Fernanda Cristina Nogueira Rodrigues ◽  
Júlia Gomes Lúcio de Araújo ◽  
Erika Michele dos Santos Araújo ◽  
Andréa Dias Neves Lago ◽  
Taís Fonseca Mantilla ◽  
...  
Keyword(s):  
Output Power ◽  
Laser Output ◽  
Laser Output Power

Performance Study of a GaAs Based Laser Diode Chip in a Condensing Environment

2009 ◽  
Author(s):  
Sushma Madduri ◽  
Bahgat G. Sammakia ◽  
William Infantolino ◽  
Satish C. Chaparala ◽  
Lawrence C. Hughes ◽  
...  
Keyword(s):  
Output Power ◽  
Laser Diode ◽  
Laser Diodes ◽  
Accelerated Aging ◽  
Climatic Conditions ◽  
Laser Output ◽  
Laser Output Power ◽  
Stress Tests ◽  
Performance Study ◽  
Aerospace Material

This paper presents a performance study done on semiconductor laser diodes in a moisture condensing environment. Devices with laser diodes are used in a wide variety of electronic applications and in various climatic conditions. The motivation behind this study is a common environmental exposure, where a device using a laser diode is brought into a relatively humid environment (a building) from a cold, outside environment. Under such conditions, condensation occurs on various components of the device, including the diode, and could affect the laser output power. Reliability of the device is a critical concern since the laser diode and the lens are susceptible to failure due to such repetitive condensation conditions. The test vehicle chosen for this study was a 980nm laser diode. These are used in products for a broad range of markets, including data communications, aerospace, material processing, scientific and defense industries [1–3]. These products may be used in environmental conditions that could result in condensation within the product. A hermetic package could address this concern, but it is an expensive option. Nonhermetic packaging for the laser component could help lower the cost of these devices; however reliability is a potential concern. Prior research on laser diodes consists of various reliability measurements on 980nm lasers using stress tests (e.g. accelerated aging tests; thermal cycling tests) [3–6]. Reliability analysis of laser diodes specifically addressing condensation measurements has not been previously reported. A Military Standard Specification [MIL-STD-883E Method 1004.7] titled, ‘Moisture resistance test’ was used to conduct this reliability study [10]. An experimental setup was designed and fabricated. A photonic package with a 980nm laser diode was subjected to repetitive condensing cycles and laser output power was recorded as a function of time, temperature and humidity. The variation in laser output power due to condensation was observed and quantified. The focus of this paper is on performance degradation of the laser diode. The possible mechanisms for this degradation are currently being investigated.

Multi-wavelength erbium-doped fiber laser based on random distributed feedback

2016 ◽  
Vol 122 (9) ◽  
Author(s):  
Yuanyang Liu ◽  
Xinyong Dong ◽  
Meng Jiang ◽  
Xia Yu ◽  
Ping Shum
Keyword(s):  
Fiber Laser ◽  
Distributed Feedback ◽  
Erbium Doped ◽  
Multi Wavelength

scholarly journals Hybrid Raman-Erbium Random Fiber Laser with a Half Open Cavity Assisted by Artificially Controlled Backscattering Fiber Reflectors

2021 ◽  
Author(s):  
R. A. Perez-Herrera ◽  
P. Roldan-Varona ◽  
M. Galarza ◽  
S. Sañudo-Lasagabaster ◽  
L. Rodriguez-Cobo ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Output Power ◽  
Signal To Noise Ratio ◽  
Power Level ◽  
Laser Cavity ◽  
Gain Medium ◽  
Optical Signal ◽  
Open Cavity ◽  
Output Power Level ◽  
Erbium Doped

Abstract A hybrid Raman-erbium random fiber laser (RFL) with a half-open cavity assisted by chirped artificially controlled backscattering fiber reflectors (ACBFRs) is presented. A combination of 2.4 km of dispersion compensating fiber (DCF) with two highly erbium-doped fiber (EDF) pieces of 5 m length was used as gain medium. A single random laser emission line centered at 1553.8 nm with an output power level of -6.5 dBm and an optical signal to noise ratio (OSNR) of 47 dB was obtained when pumped at 37.5 dBm. A full width at half maximum (FHWM) of 1 nm and a 100% confidence level (CL) output power instability as low as 0.08 dB were measured. The utilization of the new laser cavity as a temperature and strain sensor is also experimentally studied.

A Design of Diode Laser Output Power Autocontrol System

Applied laser ◽  
2012 ◽  
Vol 32 (5) ◽  
pp. 424-428
Author(s):  
李铁军 Li Tiejun ◽  
宓现强 Mi Xianqiang
Keyword(s):  
Diode Laser ◽  
Output Power ◽  
Laser Output ◽  
Laser Output Power

Highly-stable 20/400 Yb-doped Large-mode-area Fiber with 3kW Laser Output Power

2017 ◽  
Author(s):  
Yuying Wang ◽  
Kun Peng ◽  
Huan Zhan ◽  
Shuang Liu ◽  
Yuwei Li ◽  
...  
Keyword(s):  
Output Power ◽  
Laser Output ◽  
Laser Output Power ◽  
Large Mode Area ◽  
Mode Area
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