Optical module having case grounding using bypass capacitor

Details Optical module having case grounding using bypass capacitor Optical module having case grounding using bypass capacitor

2005-02-01

2008-11-25

Harvey, Minsun (Department: 2828)

Coherent light generators

Particular component circuitry

C372S038020, C372S038070, C385S088000, C385S089000, C385S092000, C385S093000, C385S014000, C398S118000, C398S135000, C257S678000, C257S664000

Reexamination Certificate

active

07457337

ABSTRACT:
According to embodiments of the present invention, an optical transponder includes a transmitter optical subassembly (TOSA). In one embodiment, the electrical ground of the TOSA may be DC-isolated from chassis ground of the transponder using a blocking capacitor that couples the AC signal path to VDD and that allows the case of the TOSA to float. In an alternative embodiment, the electrical ground of the TOSA may be DC-isolated from chassis ground of the transponder using a blocking capacitor that couples the AC signal path to VDD and a resistor that couples the DC bias level path to internal electrical ground or transponder case ground.

REFERENCES:
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patent: 2002/0135845 (2002-09-01), Robinson et al.
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patent: 2005/0045374 (2005-03-01), Kumar et al.
patent: 2005/0175299 (2005-08-01), Hargis et al.
patent: 2005/0245103 (2005-11-01), Ellison
patent: 2006/0062526 (2006-03-01), Ikeuchi
IEEE Computer Society, IEEE Std 802.3ae™ -2002. IEEE Standard for Information Technology, Aug. 30, 2002, 529 pages.

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