Title:
OPTICAL WAVEMETER
Document Type and Number:
Japanese Patent JP2021071726
Kind Code:
A
Abstract:
To provide an optical wavemeter which has a wide usable wavelength range and small losses.SOLUTION: A photonic integrated circuit (PIC) for determining a wavelength of an input signal 101 is disclosed. The PIC comprises: a substrate; a first Mach-Zehnder Interferometer (MZI) 120 disposed over the substrate, comprising first optical waveguides having a first optical path length difference, and configured to receive a first output optical signal 103 from a light source. The PIC also comprises a second Mach-Zehnder Interferometer (MZI) 130 disposed over the substrate, comprising second optical waveguides having a second optical path length difference, which is greater than the first optical path length difference, and configured to receive a second output optical signal 104 from the light source.SELECTED DRAWING: Figure 1
Inventors:
MARCEL ZEILER
NEBENDAHL BERND
NEBENDAHL BERND
Application Number:
JP2020182358A
Publication Date:
May 06, 2021
Filing Date:
October 30, 2020
Export Citation:
Assignee:
KEYSIGHT TECHNOLOGIES INC
International Classes:
G02B6/125; G01J9/02; G02B6/12; G02B6/122; G02B6/124
Attorney, Agent or Firm:
Shoichi Okuyama
Matsushima Tetsuo
Ayako Nakamura
Satoshi Morimoto
Yu Tanaka
Tokumoto Koichi
Akiko Mizushima
Arihara Koichi
Matsushima Tetsuo
Ayako Nakamura
Satoshi Morimoto
Yu Tanaka
Tokumoto Koichi
Akiko Mizushima
Arihara Koichi