OPTICAL WAVELENGTH MEASURING SYSTEM FOR OPTICAL COMMUNICATION

WIPO Patent Application WO/2022/147920

A1

An optical wavelength measuring system for optical communication, comprising an optical input port (1), a light shield (2), an off-axis parabolic mirror (3), a first flat glass (4), a second flat glass (5), at least two cylindrical lenses (6), and at least two linear photodetectors (7) which are located in a housing (11). An isolation frame (8) having a hollow area at the center and having wedge angles is arranged between the first flat glass (4) and the second flat glass (5) so as to form a sealed cavity; one side of the front surface of the first flat glass (4) is provided with at least one small flat glass (9) having a thickness and located in the sealed cavity; one end of an optical path switcher (14) is connected to the optical input port (1). According to the optical wavelength measuring system for optical communication, in the case of not increasing the optical path size, the detected spectral range is wide, optical wavelength light of various wavelength types can be accurately measured at the same time, and the pm-level measurement accuracy is achieved.

JPH0743243	[Title of Invention] A method for detecting a phase difference in an interferometer
JP2015108580	INTERFERENCE TYPE OPTICAL FIBER SENSOR
JP4566401	Optical wavelength measuring device

CHEN LIPING (CN)
JIN BIAO (CN)
HUANG JIANJUN (CN)
HU HAIYANG (CN)
LIAN ZHE (CN)

PCT/CN2021/085493

July 14, 2022

April 03, 2021

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STELIGHT INSTR CO LTD (CN)

G01J9/02

GB2209210A	1989-05-04
US4173442A	1979-11-06
CN102706462A	2012-10-03
US5168324A	1992-12-01
CN203848938U	2014-09-24
US20030035121A1	2003-02-20
CN111142179A	2020-05-12
CN209400088U	2019-09-17
CN111289124A	2020-06-16

CHINA FARFIR INTELLECTUAL PROPERTY AGENCY LTD. (CN)

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