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US 2007/0177884 A1Published application
Optical receiver
AssigneeOpnext Japan, Inc.
InventorsOsamu Kagaya, Michihide Sasada
Life of this patent
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Abstract
There is provided an optical receiver in which, between an optical receiver sub-assembly and a pre-amplifier on a main printed circuit board, two transmission lines on a flexible printed circuit board for connecting an optical receiver module with the main printed circuit board, a balanced-type attenuator circuit composed of four resistor elements, and two capacitor elements connected in parallel with the balanced-type attenuator circuit are provided.
Claims7
An optical receiver comprising:
- a light receiving element for converting an optical signal into an electrical signal;
- a first amplifier for amplifying an output signal from the light receiving element;
- and
- a second amplifier for further amplifying an output from the first amplifier,
- wherein there is provided a frequency characteristic compensating circuit between said first amplifier and said second amplifier, the frequency characteristic compensating circuit being configured by a plurality of passive elements.
2 more elements
An optical receiver comprising:
- an optical receiver sub-assembly including a light receiving element for converting an optical signal into an electrical signal and a first amplifier for amplifying an output signal from the light receiving element;
- and
- a main printed circuit board mounting a second amplifier for further amplifying an output from said first amplifier,
- wherein said optical receiver sub-assembly and said main printed circuit board are connected through a flexible printed circuit board for transmitting the electrical signal amplified by said first amplifier, and
- there is provided a frequency characteristic compensating circuit between a flexible printed circuit board connected portion and said second amplifier on said main printed circuit board, the frequency characteristic compensating circuit being configured by a plurality of passive elements.
2 more elements
Dependencies are inferred from the claim text.