Optimization of fiber-laser coupling with respect to both the coupling efficiency and carrier-to-noise ratio: a novel design

2003 ◽  
Author(s):  
S.K. Mondal ◽  
F.G. Shi
Keyword(s):  
Fiber Laser ◽  
Coupling Efficiency ◽  
Noise Ratio ◽  
Novel Design

Novel design of a gain-switched diode-pumped fiber laser

2009 ◽  
Author(s):  
Martin Giesberts ◽  
Jens Geiger ◽  
Martin Traub ◽  
Hans-Dieter Hoffmann
Keyword(s):  
Fiber Laser ◽  
Diode Pumped ◽  
Novel Design

Coupler for butt-coupling between edge-emitting lasers and inverted Si taper waveguide

2019 ◽  
Vol 33 (09) ◽  
pp. 1950074
Author(s):  
Baoguang Sun ◽  
Congzhong Cai ◽  
Haojie Ni ◽  
Renbing Tan
Keyword(s):  
Coupling Efficiency ◽  
High Refractive Index ◽  
Core Material ◽  
Silicon Waveguide ◽  
Laser Alignment ◽  
Index Contrast ◽  
High Index Contrast ◽  
Emitting Lasers ◽  
Novel Design ◽  
Butt Coupling

A novel design and analysis of a butt-coupler are presented to be coupled with an edge-emitting laser and a silicon waveguide. The coupler is fairly effective when used with an edge-emitting laser of a certain integrated size and a high refractive index core material. Butt-coupling is not sensitive to polarization as both TE and TM modes achieve similar efficiency. The laser alignment tolerance and silicon waveguide gap in both lateral and vertical positions were studied. Although the air gap between the laser and the silicon cladding reduces coupling efficiency greatly, gap filling can help solve this problem. This design is proved to be quite effective in dealing with high index contrast and huge size mismatch between the laser and semiconductor waveguide.

Study on high coupling efficiency Er-doped fiber laser for femtosecond optical frequency comb

Laser Physics ◽  
2016 ◽  
Vol 26 (9) ◽  
pp. 095102 ◽  
Author(s):  
Lihui Pang ◽  
Wenjun Liu ◽  
Hainian Han ◽  
Zhiyi Wei
Keyword(s):  
Fiber Laser ◽  
Frequency Comb ◽  
Coupling Efficiency ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Er Doped

scholarly journals HIGH SIGNAL-TO-NOISE RATIO Q-SWITCHING ERBIUM DOPED FIBER LASER PULSE EMISSION UTILIZING SINGLE LAYER TRIVIAL TRANSFER GRAPHENE FILM SATURABLE ABSORBER

2016 ◽  
Vol 78 (3) ◽  
Author(s):  
K. Y. Lau ◽  
A. A. Latif ◽  
M. H. Abu Bakar ◽  
M. A. Mahdi
Keyword(s):  
Laser Pulse ◽  
Fiber Laser ◽  
Saturable Absorber ◽  
Signal To Noise Ratio ◽  
Single Layer ◽  
High Signal ◽  
Signal To Noise ◽  
Pulse Emission ◽  
Erbium Doped ◽  
Noise Ratio

This paper presents the high signal-to-noise ratio (SNR) Q-switched erbium-doped fiber laser pulse emission using a commercial single layer graphene (SLG) film as a saturable absorber (SA). A sandwiched-type structure with transferred single layer SLG film between two fiber ferrules is formed to function as the SA. Q-switched pulse emission with repetition rate from 47.25 kHz to 67.39 kHz and round-trip time per oscillation from 7.42 µs to 10.36 µs are obtained from the laser cavity set-up. The SNR of 62.64 dB shows a good quality of pulse generation using the SLG film as SA. The effortless production of SLG is enabling factor to produce fast fabrication and low cost SA for application in Q-switched pulsed fiber lasers.  

In-Parallel Passive Compliant Coupler for Robot Force Control

2000 ◽  
Author(s):  
T. A. Dwarakanath ◽  
Carl D. Crane ◽  
Joseph Duffy ◽  
Chad Tyler
Keyword(s):  
Mechanism Design ◽  
Force Control ◽  
Parallel Mechanism ◽  
Quality Index ◽  
Compliant Mechanism ◽  
Signal To Noise Ratio ◽  
The Novel ◽  
Signal To Noise ◽  
Noise Ratio ◽  
Novel Design

Abstract This paper describes the design of a Passive Compliant Coupler for Force Control (PCCFC) based on an in-parallel mechanism. The optimal synthesis of the mechanism is performed with the objective of achieving a good quality index. The novel design of the connector (also termed as the leg), a crucial element of the mechanism, is one of the important features of the paper. The shape optimization of connectors of an in-parallel mechanism is obtained by satisfying compliant requirements and considering maximization of signal to noise ratio criteria. The various design aspects of sizing, sensing the displacement, and implementation of the connector are discussed. The in-parallel compliant mechanism for force control is obtained by optimizing the signal to noise ratio at various stages of the mechanism design.

Novel Design of Simple and Compact Tunable Fiber Laser

CLEO: 2015 ◽  
2015 ◽  
Author(s):  
Y. Fujitomo ◽  
O. Ishii ◽  
M. Yamazaki
Keyword(s):  
Fiber Laser ◽  
Novel Design ◽  
Tunable Fiber Laser
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