Waveguide light detecting element
US7020375B2 · kind B2 · utility
6Cited by
1References
6Claims
0Family size
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Key dates
| Filing date | Feb 13, 2004 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Jul 15, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F55/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Composition wavelengths of materials of cladding layers and optical guide layers are 0.92 μm and 1.2 μm respectively. When the thickness of optical guide layers, corresponding to an extreme value in which inclination of a sensitivity curve to 1.3 μm-wavelength light and to 1.55 μm-wavelength light with respect to a change in the thickness of each of both optical guide layers changes from positive to negative, are defined as d1 and d2, respectively, the thickness, dg, of optical guide layers of a light detecting element satisfies 0.75d1≦dg≦1.25d2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.