Tap photodetector and optical fiber communication system
AssigneeHuawei Technologies Co., Ltd.
InventorsHuiping Li, Zhenghua Fu, Yonghao Fei
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Abstract
A tap photodetector includes at least one detection unit configured to detect an optical signal. Each detection unit may separately detect an optical signal. Each detection unit includes a transparent zone and a detection zone. The transparent zone is configured to transmit a part of an optical signal, and the detection zone is disposed on a periphery of the transparent zone and is configured to detect another part of the optical signal that does not pass through the transparent zone.
Claims20
A tap photodetector, comprising:
- a detector configured to detect an optical signal and comprising:
- a transparent zone configured to transmit a first part of the optical signal;
- and
- a detection zone disposed on a periphery of the transparent zone and configured to absorb a second part of the optical signal to detect the optical signal,
- wherein the first part of the optical signal is larger than the second part of the optical signal, and
- wherein an inner diameter of the detection zone is greater than 2.5 times a waist spot radius of a flare that is of the optical signal and that is irradiated to the detector.
A tap photodetector, comprising:
- a detector configured to detect an optical signal and comprising:
- a transparent zone comprising a grating structure configured to transmit a first part of the optical signal and diffract a second part of the optical signal;
- and
- a detection zone configured to absorb the second part to detect the optical signal,
- wherein the first part of the optical signal is larger than the second part of the optical signal, and
- wherein an inner diameter of the detection zone is greater than 2.5 times a waist spot radius of a flare that is of the optical signal and that is irradiated to the detector.
An optical fiber communication system, comprising:
- an input optical fiber;
- and
- a tap photodetector configured to detect an optical signal in the input optical fiber, wherein the tap photodetector comprises a detector configured to detect the optical signal, and wherein the detector comprises:
- a transparent zone configured to transmit a first part of the optical signal;
- and
- a detection zone disposed on a periphery of the transparent zone and configured to absorb a second part of the optical signal to detect the optical signal,
- wherein the first part of the optical signal is larger than the second part of the optical signal, and
- wherein an inner diameter of the detection zone is greater than 2.5 times a waist spot radius of a flare that is of the optical signal and that is irradiated to the detector.
Dependencies are inferred from the claim text.