Semiconductor laser module and optical transmission apparatus using the semiconductor laser module
A semiconductor laser module includes a distributed-feedback laser. When a predetermined transmission loss, a predetermined number of channels, and a predetermined modulation factor per channel are given, a cavity length of the distributed-feedback laser satisfies a condition that a distortion is le...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A semiconductor laser module includes a distributed-feedback laser. When a predetermined transmission loss, a predetermined number of channels, and a predetermined modulation factor per channel are given, a cavity length of the distributed-feedback laser satisfies a condition that a distortion is less than a predetermined distortion level and a carrier-to-noise ratio is more than a predetermined value based on a relation between transmission loss, number of channels, modulation factor per channel, and the cavity length of the distributed-feedback laser. |
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