Energy-Efficient VCSELs for Optical Interconnects by Philip Moser

Author:Philip Moser
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

At the design wavelength of 980-nm the measured refractive index of the is 1.896. The photon lifetime of the VCSEL without further modification of the top DBR is 3.7 ps and reduces to 1.8 ps when 55 nm of is added to the topmost GaAs-layer. The photon lifetime of 1.8 ps is close to the local minimum of , which is calculated to be achieved at a -thickness of 59.6 nm. The calculated difference of for 55.0 and 59.6 nm of is only 0.01 ps which is certainly smaller than the accuracy of the control of the optical thickness of the additional -layer. The calculated photon lifetime versus the thickness of the removed top DBR material or the thickness of the added is plotted in Fig. 6.8 .

Fig. 6.8Calculated photon lifetime versus the etch depth of removed mirror material or the thickness of added

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.