Lossless non-interferometric electro-optic III-V index-guided-wa

Details Lossless non-interferometric electro-optic III-V index-guided-wa Lossless non-interferometric electro-optic III-V index-guided-wa

1989-08-31

1991-05-07

Lee, John D.

350 9614, G02F 129

Patent

active

050131133

ABSTRACT:
Lossless guided-wave switches with more than 30 dB of crosstalk-isolation are comprised of branched channel waveguides with laser-like cross-sections. Optical gain, sufficient to overcome power-splitting losses, is provided by carrier-injection currents. Due to its low-noise properties, the single-quantum-well structure is found to be optimum for cascading switches into a multi-stage network. A lossless 1.times.N network with 1024 switched outputs should be feasible.

REFERENCES:
patent: 4717228 (1988-01-01), Thylen
patent: 4743087 (1988-05-01), Utaka et al.

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