Coherent light generators – Particular beam control device – Tuning
Patent
1995-01-17
1996-04-23
Davie, James W.
Coherent light generators
Particular beam control device
Tuning
372 45, 372 46, 372 50, H01S 310, H01S 319
Patent
active
055110843
ABSTRACT:
Tunable laser diode having an integrated Mach-Zehnder interferometer is provided. A first and a second waveguide are arranged vertically relative to one another with respect to the layer plane as stripe-shaped layers. The second waveguide extends over the entire resonator length between mirror end faces, whereas the first waveguide is only present in one or more interconnected sections provided as coupling region. The waveguides are arranged in such close proximity to one another in this coupling region that coupling occurs between modes guided in the waveguides. An active layer and a tuning layer are arranged vertically relative to one another in these waveguides. A separate current injection into this tuning layer and into this active layer are present, and an interconnected section of the waveguide not present over the entire resonator length is a respective, natural multiple of the coupling length of two specific modes in the waveguides to be coupled.
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patent: 5422898 (1995-06-01), Kosh et al.
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Davie James W.
Siemens Aktiengesellschaft
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