Tap coupler, optical communication apparatus, and optical branching method
AssigneeFujitsu Optical Components Limited
InventorAkira OKA
Life of this patent
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Abstract
A tap coupler includes a mode generation unit, a separation unit, and an output unit. The mode generation unit generates, in accordance with a discontinuous portion disposed on a travelling path of signal light that is propagating, a first mode of the signal light and a second mode that is different from the first mode. The separation unit separates, when the first mode and the second mode are input from the mode generation unit, the first mode and the second mode. The output unit outputs branch light in accordance with a transition of the second mode received from the separation unit.
Claims11
A tap coupler comprising:
- a mode generation unit that generates, in accordance with a discontinuous portion that is disposed on a travelling path of signal light that is propagating, a first mode of the signal light and a second mode that is different from the first mode;
- a separation unit that separates, when the first mode and the second mode are input from the mode generation unit, the first mode and the second mode;
- and
- an output unit that outputs branch light in accordance with a transition of the second mode received from the separation unit.
An optical communication apparatus comprising:
- a processor that executes signal processing on an electrical signal;
- a light source that emits light;
- a communication device that performs communication using the electrical signal and the light;
- a variable attenuator that performs level adjustment on signal light that is received from the communication device or signal light that is output to the communication device;
- a tap coupler that obtains, from signal light that is received from the variable attenuator or signal light that is output to the variable attenuator, the signal light and branch light of the signal light;
- a detector that detects the branch light received from the tap coupler;
- and
- a controller that controls the variable attenuator based on a detection result obtained by the detector, wherein
- the tap coupler includes
- a mode generation unit that generates, in accordance with a discontinuous portion that is disposed on a travelling path of signal light that is propagating, a first mode of the signal light and a second mode that is different from the first mode;
- a separation unit that separates, when the first mode and the second mode are input from the mode generation unit, the first mode and the second mode;
- and
- an output unit that outputs the branch light in accordance with a transition of the second mode received from the separation unit.
An optical branching method that causes a tap coupler to execute a process comprising:
- generating, in accordance with a discontinuous portion that is disposed on a travelling path of signal light that is propagating, a first mode of the signal light and a second mode that is different from the first mode;
- separating, when the first mode and the second mode are input, the first mode and the second mode;
- and
- outputting branch light in accordance with a transition of the separated second mode.
Dependencies are inferred from the claim text.