| 摘要 |
Provided is a metal casing structure capable of avoiding a cavity resonance at 10 GHz and 20 GHz by controlling an eigenmode frequency in an inner space of a casing without involving an increase in cost, and a 10 Gbit/s optical transceiver module which achieves reduction in unnecessary electromagnetic waves and cost. In the optical transceiver module, a metal casing having a cavity therein is formed by an upper casing (100) and a lower casing (101), a metal partition wall (103, 104) is provided on at least one of the upper casing (100) and the lower casing (101) near a central portion of the casing in a direction parallel to a direction connecting a front and a rear thereof, and a length of a gap between the partition wall (103, 104) and a printed circuit board (102) is adjusted.
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