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Optical phase shifter, optical interferometer based on optical phase shifter, and manufacturing method of optical interferometer

A technology of optical interference and phase shifter, which is applied in optics, optical waveguide, nonlinear optics, etc., and can solve problems such as the complexity of control circuits

Active Publication Date: 2020-12-25
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this complicates the required control circuitry, which has to take into account the temporal dynamics of self-heating

Method used

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  • Optical phase shifter, optical interferometer based on optical phase shifter, and manufacturing method of optical interferometer
  • Optical phase shifter, optical interferometer based on optical phase shifter, and manufacturing method of optical interferometer
  • Optical phase shifter, optical interferometer based on optical phase shifter, and manufacturing method of optical interferometer

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Embodiment Construction

[0027] In an embodiment, an optical phase shifter is provided. Optical phase shifters can reduce the temperature sensitivity of the structure's effective index of refraction. In one embodiment, an optical interferometer comprising at least one such optical phase shifter is provided. In one embodiment, an optical switch or modulator comprising at least one such optical interferometer is provided.

[0028] In an embodiment, the optical interferometer comprises a first arm defining the optical path of the first arm and a second arm defining the optical path of the second arm. A beam splitter for splitting an input beam into a first sub-beam propagating in a first arm optical path and a second sub-beam propagating in a second arm optical path is provided. A beam combiner for combining a first sub-beam propagating in a first arm optical path and a second sub-beam propagating in a second arm optical path into an output beam is provided. The first arm includes a carrier modifying ...

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Abstract

A phase-shifting optical device and a manufacturing method are provided. In an embodiment, the phase shifting optical device may include a first arm defining a first arm optical path, a second arm defining a second arm optical path, a first arm for dividing the input beam into a first sub-beam propagating in the first arm optical path, and a beam splitter for the second sub-beam propagating in the second arm optical path, and a beam splitter for combining the first sub-beam propagating in the first arm optical path and the second sub-beam propagating in the second arm optical path. Beam combiner for output beams. The first arm includes a carrier modifying element for introducing a phase shift in the optical path of the first arm relative to the optical path of the second arm. A cladding is provided near the first arm, the refractive index temperature coefficient of the cladding (dn / dT) cl The refractive index temperature coefficient of the first arm (dn / dT) a The signs are opposite.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Patent Application No. 15 / 476,313, filed March 31, 2017, which is hereby incorporated by reference in its entirety. technical field [0003] The present application relates to the field of optical devices, in particular to optical devices using phase shifting. Background technique [0004] Optical devices such as optical switches based on free-carrier effects are widely used in data communication and processing. In particular, optical switches have many advantages over electrical switches, including switching speed, power consumption, and stability. For example, there are broader opportunities to integrate multiple functions into optical switch components than with microelectromechanical (MEMS) switches. Interferometer-based optical switches use optical phase shifters to achieve the desired switching function. [0005] Typically, optical devices such as optical switches and mod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/12G02F1/025
CPCG02F1/009G02F1/025G02F1/2257G02F2201/06G02F1/0156G02F1/212
Inventor 蒋嘉
Owner HUAWEI TECH CO LTD