Analysis of spectral response of optical switching devices based on chalcogenide bistable fiber Bragg gratings

2016 ◽  
Author(s):  
Ľubomír Scholtz ◽  
Michaela Solanská ◽  
Libor Ladányi ◽  
Jarmila Müllerová
Keyword(s):  
Optical Switching ◽  
Spectral Response ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Optical Switching Devices ◽  
Switching Devices

Numerical Analysis of Thermal Dependence of the Spectral Response of Polymer Optical Fiber Bragg Gratings

2016 ◽  
Vol 12 (1) ◽  
pp. 85-95 ◽  
Author(s):  
Hisham Hisham
Keyword(s):  
Optical Fiber ◽  
High Stability ◽  
Spectral Response ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Bragg Reflector ◽  
Polymer Optical Fiber ◽  
Thermal Dependence ◽  
Silica Optical Fiber ◽  
Index Modulation

The thermal dependence of the spectral response (i.e. transmission, reflection and time delay ( r) responses) of uniform polymer optical fiber (POF) Bragg gratings has been investigated. In addition to the temperature dependence, the effects of grating strength (kLg) and fiber index modulation ( n) have been investigated. Besides high capability of tunable wavelength due to the unique large and negative thermo-optic coefficient of POF, the spectral response for POF Bragg gratings show high stability and larger spectrum bandwidth with temperature variation compare with the silica optical fiber (SOF) Bragg gratings, especially with the increase of the kLg value. It was found that by increasing kLg, the peak reflectance value increases and the bandwidth of the Bragg reflector become narrower. Also it’s shown by increasing the kLg value, r deceasing significantly and reach its minimum value at the designed wavelength ( B). Furthermore, the r for POF Bragg gratings is less than that for SOF Bragg gratings at the same value of kLg. Also it’s found that the peak reflectivity value increases to around 60% when the n value increases from 1*10-4 to 5*10-4.

Tungsten-doped Ge2Sb2Te5 phase change material for high-speed optical switching devices

2020 ◽  
Vol 116 (13) ◽  
pp. 131901
Author(s):  
Pengfei Guo ◽  
Joshua A. Burrow ◽  
Gary A. Sevison ◽  
Heungdong Kwon ◽  
Christopher Perez ◽  
...  
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
High Speed ◽  
Optical Switching ◽  
Optical Switching Devices ◽  
Change Material ◽  
Switching Devices
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