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Optical receiver circuit, optical receiver, optical terminal device, and optical communication system
US11329729B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11329729-B2 |
| Application number | US-202017131089-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 22, 2020 |
| Priority date | Jul 12, 2018 |
| Publication date | May 10, 2022 |
| Grant date | May 10, 2022 |
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- Title
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- Abstract
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- Assignees and inventors
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Abstract
Official abstract text for this publication.
An optical receiver circuit includes a light receiving element to convert an optical signal into a current signal, a submount substrate on which the light receiving element is mounted, a wiring connected to an anode pad of the light receiving element and a wire connected to a preamplifier on the submount substrate, a wiring to which a bias voltage is applied on the submount substrate; a wiring connected to a cathode pad of the light receiving element on the submount substrate; and a resistor connected to the wiring to serve as a path when the bias voltage is applied to the light receiving element via the wiring on the submount substrate. A resistance value of the resistor is determined such that a resonance peak between the preamplifier and ground is suppressed and that oscillation in the preamplifier is suppressed.
First claim
Opening claim text (preview).
What is claimed is: 1. An optical receiver circuit comprising: a photoelectric transducer to convert an optical signal into a current signal; a submount substrate on which the photoelectric transducer is mounted; a first wiring connected to an anode pad of the photoelectric transducer and a wire connected to a preamplifier on the submount substrate; a second wiring to which a bias voltage is applied on the submount substrate; a filter circuit to remove noise from the bias voltage; a third wiring connected to a cathode pad of the photoelectric transducer on the submount substrate; and a first resistive element connected to the third wiring to serve as a path when the bias voltage is applied to the photoelectric transducer via the second wiring on the submount substrate, wherein a resistance value of the first resistive element is determined such that a resonance peak between the preamplifier and ground is suppressed and that oscillation in the preamplifier is suppressed, the bias voltage is applied to the second wiring via the filter circuit, the bias voltage is applied to the photoelectric transducer via the filter circuit, the second wiring, the first resistive element, and the third wiring, and the filter circuit includes a capacitor and a resistive element connected in series between the bias voltage and the second wiring. 2. An optical receiver comprising the optical receiver circuit according to claim 1 . 3. An optical terminal device comprising the optical receiver according to claim 2 . 4. An optical communication system comprising the optical terminal device according to claim 3 .
Assignees
Inventors
Classifications
- H04B10/69Primary
Electrical arrangements in the receiver · CPC title
including resistors (H03H7/075, H03H7/09, H03H7/12, H03H7/13 take precedence) · CPC title
Optical component, e.g. opto-electronic component · CPC title
Non-printed resistor · CPC title
Non-printed filter · CPC title
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Frequently asked questions
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- What does patent US11329729B2 cover?
- An optical receiver circuit includes a light receiving element to convert an optical signal into a current signal, a submount substrate on which the light receiving element is mounted, a wiring connected to an anode pad of the light receiving element and a wire connected to a preamplifier on the submount substrate, a wiring to which a bias voltage is applied on the submount substrate; a wiring …
- Who is the assignee on this patent?
- Mitsubishi Electric Corp
- What technology area does this patent fall under?
- Primary CPC classification H04B10/69. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 10 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).