Surface-normal semiconductor optical cavity devices

Fishing – trapping – and vermin destroying

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437127, H01L 2120

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055739750

ABSTRACT:
A semiconductor device is provided that includes an optical cavity that is designed to provide a prescribed resonant optical wavelength. The optical cavity includes a mirror structure deposited on top of a substrate and a multi-layer region such as an electroabsorptive region, for example, deposited over the mirror structure. A partial antireflective coating is deposited over the multi-layer region. The mirror structure and the multilayer region have a thickness variation sufficient to yield a resonant optical wavelength that deviates from the prescribed resonant wavelength. The partial antireflective coating has a non-uniform thickness variation that causes the resonant optical wavelength to shift substantially toward the prescribed resonant optical wavelength.

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patent: 5293392 (1994-03-01), Shieh et al.
patent: 5298454 (1994-03-01), D'Asaro et al.
patent: 5397739 (1995-03-01), Chalmers et al.
"Electroabsorptive Fabry-Perot Reflection Modulators With Asymmetric Mirrors", R. H. Yan et al., IEEE Photonics Technology Letters, vol. No. 1, No. 9, pp. 273-275, Sep. 1989.
Co-pending United States Patent Application Serial No. 08/236,618, K. W. Goossen Case 17, filed May 2, 1994 entitled "Surface Normal Semiconductor Optical Cavity Devices".

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