Variable wavelength fibre Bragg gratings written with diffractive optical element

2000 ◽  
Vol 36 (6) ◽  
pp. 567 ◽  
Author(s):  
K. Stump ◽  
T.K. Plant ◽  
Y. Sun
Keyword(s):  
Optical Element ◽  
Bragg Gratings ◽  
Diffractive Optical Element ◽  
Fibre Bragg Gratings

Fibre Bragg Gratings in Harsh and Space Environments: Principles and applications

2019 ◽  
Author(s):  
Brahim Aissa ◽  
Emile I. Haddad ◽  
Roman V. Kruzelecky ◽  
Wes R. Jamroz
Keyword(s):  
Bragg Gratings ◽  
Space Environments ◽  
Fibre Bragg Gratings

Frequency locking using cascaded fibre Bragg gratings in OFDM systems

1996 ◽  
Vol 32 (12) ◽  
pp. 1120 ◽  
Author(s):  
C.S. Park ◽  
G.Y. Lyu ◽  
D.H. Lee
Keyword(s):  
Bragg Gratings ◽  
Ofdm Systems ◽  
Frequency Locking ◽  
Fibre Bragg Gratings

Dispersion compensating, reconfigurable optical add drop multiplexer using chirped fibre Bragg gratings

1997 ◽  
Vol 33 (17) ◽  
pp. 1474 ◽  
Author(s):  
A.D. Ellis ◽  
R. Kashyap ◽  
I. Crisp ◽  
D.J. Malyon
Keyword(s):  
Bragg Gratings ◽  
Fibre Bragg Gratings

scholarly journals Holographic Display System to Suppress Speckle Noise Based on Beam Shaping

Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 204
Author(s):  
Di Wang ◽  
Yi-Wei Zheng ◽  
Nan-Nan Li ◽  
Qiong-Hua Wang
Keyword(s):  
Optical Element ◽  
Speckle Noise ◽  
Beam Shaping ◽  
Diffractive Optical Element ◽  
The Other ◽  
Spatial Light Modulators ◽  
Viewing Angle ◽  
Display System ◽  
Holographic Display ◽  
Light Modulators

In this paper, a holographic system to suppress the speckle noise is proposed. Two spatial light modulators (SLMs) are used in the system, one of which is used for beam shaping, and the other is used for reproducing the image. By calculating the effective viewing angle of the reconstructed image, the effective hologram and the effective region of the SLM are calculated accordingly. Then, the size of the diffractive optical element (DOE) is calculated accordingly. The dynamic DOEs and effective hologram are loaded on the effective regions of the two SLMs, respectively, while the wasted areas of the two SLMs are performed with zero-padded operations. When the laser passes through the first SLM, the light can be modulated by the effective DOEs. When the modulated beam illuminates the second SLM which is loaded with the effective hologram, the image is reconstructed with better quality and lower speckle noise. Moreover, the calculation time of the hologram is reduced. Experiments indicate the validity of the proposed system.

Broadly tunable DBR fibre laser using sampled fibre Bragg gratings

1995 ◽  
Vol 31 (1) ◽  
pp. 37-38 ◽  
Author(s):  
M. Ibsen ◽  
B.J. Eggleton ◽  
M.G. Sceats ◽  
F. Ouellette
Keyword(s):  
Bragg Gratings ◽  
Fibre Laser ◽  
Fibre Bragg Gratings

High-efficiency subwavelength diffractive optical element in GaAs for 975 nm

1995 ◽  
Vol 20 (12) ◽  
pp. 1441 ◽  
Author(s):  
M. E. Warren ◽  
R. E. Smith ◽  
G. A. Vawter ◽  
J. R. Wendt
Keyword(s):  
High Efficiency ◽  
Optical Element ◽  
Diffractive Optical Element

Design of step-chirped fibre Bragg gratings

1997 ◽  
Vol 136 (5-6) ◽  
pp. 461-469 ◽  
Author(s):  
Raman Kashyap
Keyword(s):  
Bragg Gratings ◽  
Fibre Bragg Gratings
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