US 12,081,262 B2
PON powermeter using multi input type AWG
Wan Chun Kim, Gwangju (KR); Hyung Myung Moon, Gwangju (KR); Jin Goo Pyo, Gwangju (KR); and Jin Bong Kim, Gwangju (KR)
Assigned to PHOTONICS PLANAR INTEGRATION TECHNOLOGY INC, Gwangju (KR)
Filed by PHOTONICS PLANAR INTEGRATION TECHNOLOGY INC, Gwangju (KR)
Filed on Aug. 29, 2022, as Appl. No. 17/898,133.
Claims priority of application No. 10-2022-0037041 (KR), filed on Mar. 25, 2022; and application No. 10-2022-0099020 (KR), filed on Aug. 9, 2022.
Prior Publication US 2023/0308178 A1, Sep. 28, 2023
Int. Cl. H04B 10/08 (2006.01); H04B 10/079 (2013.01); H04B 10/27 (2013.01)
CPC H04B 10/07955 (2013.01) [H04B 10/07957 (2013.01); H04B 10/27 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A PON power meter using multi input type AWG, comprising:
a first input part into which a first signal is input, wherein the first signal has S optical signals whose wavelengths are different from each other;
a second input part into which a second signal is input, wherein the second signal has P optical signals whose wavelengths are different from each other;
a coupler that receives the first signal and the second signal from the first input part and the second input part and outputs the received first signal and second signal through one output line;
an AWG that distributes the signal output from the output line of the coupler to M output waveguides according to wavelength band;
a detection part configuring (S+P) detection channels by connecting a photodetection element to only (S+P) output waveguides of the M output waveguides of the AWG, wherein each of the (S+P) output waveguides outputs an optical signal whose wavelength corresponds to one of the wavelengths of the S optical signals and the P optical signals; and
an output part that outputs a strength of the signal detected by the detection part,
wherein the AWG is a 1×M AWG, S and P are integers, (S+P) is an integer that is greater than or equal to 3, M is an integer that is greater than or equal to (S+P), and the S optical signals and the P optical signals are output to different output waveguides in the AWG.