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Electroabsorptive Fabry-Perot reflection modulators with asymmetric mirrors

Journal Article · · IEEE Photonics Technology Letters; (USA)
DOI:https://doi.org/10.1109/68.43343· OSTI ID:5726247
; ;  [1]
  1. California Univ., Santa Barbara, CA (USA). Dept. of Electrical and Computer Engineering
The authors report a normally-on electroabsorptive surface-normal Fabry-Perot reflection modulator with an on/off ratio of 22, insertion loss of 3.7 dB, and optical bandwidth of 3.4 nm for an operating voltage swing of 11 V. The asymmetric Fabry-Perot structure is made with asymmetric mirrors using a quarter-wavelength grating of 15 1/2 periods on the bottom, and an air-semiconductor interface on the top. The active region is 1.4{mu}m thick and composed of 100 A GaAs/100 A Al/sub 0.2/Ga/sub 0.8/As multiple quantum wells. Such a structure provides both efficiency and optical bandwidth for surface-normal modulators.
OSTI ID:
5726247
Journal Information:
IEEE Photonics Technology Letters; (USA), Journal Name: IEEE Photonics Technology Letters; (USA) Vol. 1:9; ISSN IPTLE; ISSN 1041-1135
Country of Publication:
United States
Language:
English