OPTICAL NETWORK DEVICE
PROBLEM TO BE SOLVED: To secure stable optical coupling and a stable optical transmission channel in a device to any outside environment changes for a long period of time. SOLUTION: A glass plate 131 having a spherically curved surface is placed near the tip of a fiber 140 and a case 12 has an airti...
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To secure stable optical coupling and a stable optical transmission channel in a device to any outside environment changes for a long period of time. SOLUTION: A glass plate 131 having a spherically curved surface is placed near the tip of a fiber 140 and a case 12 has an airtight structure, thereby a vacuum state is obtained. |
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