New passive fiber depolarizer based on cascaded all-fiber recirculating rings

1998 ◽  
Author(s):  
Benson P. Shen ◽  
Chinlon Lin
Keyword(s):  
1995 ◽  
Author(s):  
Robert Y. Loo ◽  
James H. Schaffner ◽  
Gregory L. Tangonan ◽  
V. L. Jones

Author(s):  
Э.К. Алгазинов ◽  
В.А. Шульгин ◽  
И.А. Лавриненко ◽  
А.А. Сирота

AbstractWe consider a method of probe analysis employing fiber-optic a composite Y-circulator design for the implementation of laser-induced fluorescence (LIF) spectroscopy diagnostics. The proposed principle of the LIF analyzer is based on spatially separated directed optical beams of excitation and fluorescence radiations. Conditions of the effective Y-circulator operation as a passive fiber-optic switch are determined. Experimental investigation of the switched radiation losses is performed. An example of using the proposed analyzer for LIF diagnostics of biological media is presented.


2012 ◽  
Vol 29 ◽  
pp. 2874-2878
Author(s):  
Danping Jia ◽  
Wei Xue ◽  
Jinhui Chen ◽  
Limin Zhao

2011 ◽  
Vol 36 (23) ◽  
pp. 4623 ◽  
Author(s):  
D. A. Zezyulin ◽  
V. V. Konotop ◽  
M. Taki

Author(s):  
Sami D. Alaruri

Insertion loss is an important parameter used to characterize passive fiber-optic components, such as WDM couplers and variable optical attenuators. This article describes an automated insertion loss measurement system which incorporates 980 nm, 1310 nm, 1529 nm and 1561 nm DFB lasers and two internal fiber optic standards. Insertion loss measurements collected with the system for WDM couplers and internal standards are presented. The system repeatability was validated by measuring the insertion loss for a WDM coupler six times at 980 nm, 1310 nm, 1529 nm and 1561 nm over 3 days period. The standard deviation calculated for the insertion loss measurements is less than 0.11 dB and the %CV is less than 1%.


IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 28334-28339 ◽  
Author(s):  
Yizhu Chen ◽  
Jinyong Leng ◽  
Hu Xiao ◽  
Tianfu Yao ◽  
Pu Zhou

Author(s):  
Zehui Wang ◽  
Qirong Xiao ◽  
Yusheng Huang ◽  
Jiading Tian ◽  
Dan Li ◽  
...  

In this paper, we reported both the experimental demonstration and theoretical analysis of a Raman fiber laser based on a master oscillator–power amplifier configuration. The Raman fiber laser adopted the dual-wavelength bidirectional pumping configuration, utilizing 976 nm laser diodes and 1018 nm fiber lasers as the pump sources. A 60-m-long $25/400~\unicode[STIX]{x03BC}\text{m}$ ytterbium-doped fiber was used to convert the power from 1070 to 1124 nm, realizing a maximum power output of 3.7 kW with a 3 dB spectral width of 6.8 nm. Moreover, we developed a multi-frequency model taking into consideration the Raman gain spectrum and amplified spontaneous emission. The calculated spectral broadening of both the forward and backward laser was in good agreement with the experimental results. Finally, a 1.5 kW, 1183 nm second-order Raman fiber laser was further experimentally demonstrated by the addition of a 70-m-long germanium-doped passive fiber.


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