Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1998-06-23
2000-02-08
Bovernick, Rodney
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
372102, 372 96, 372 98, 359 27, 359569, 359 57, 359572, 359576, G02B 532, G02B 518
Patent
active
060233540
ABSTRACT:
A semiconductor Bragg reflector and to a method of fabricating it. The reflector comprises a plurality of stacked layers on a substrate of a III-V type material, one of the stacked layers forming a holographic grating. The layer forming the grating comprises an alternating succession of air pockets and of III-V type material. Such a reflector is particularly suitable for use in laser devices.
REFERENCES:
patent: 4622114 (1986-11-01), Glass et al.
patent: 5033816 (1991-07-01), Blondeau et al.
patent: 5300190 (1994-04-01), Sugimoto et al.
patent: 5726805 (1998-03-01), Kaushik et al.
C. Cremer et al, "Bragg Gratings on INGAASP/INP Waveguides as Polarization Independent Optical Filters" Journal of Lightwave Technology, vol. 7, No. 11, Nov. 1, 1989, pp. 1641-1645.
Bissessur Hans
Bodere Alain
Brillouet Fran.cedilla.ois
Gentner Jean Louis
Goldstein Leon
Alcatel
Bovernick Rodney
Kim Sung T.
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