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On-chip tunable optical isolator based on active-passive optical micro cavity coupling system

An optical microcavity and coupling system technology, applied in the field of micro-optical components, can solve the problems of difficult integration, low sensitivity, and difficult control of optical isolators, and achieve the effect of wide adjustable range and high sensitivity

Active Publication Date: 2014-11-05
NANJING UNIV
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  • Abstract
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Problems solved by technology

[0006] The purpose of the present invention is to provide an on-chip tunable optical isolator based on an active-passive optical microcavity coupling system for the shortcomings of traditional optical isolators that are difficult to integrate, difficult to control, and low in sensitivity

Method used

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  • On-chip tunable optical isolator based on active-passive optical micro cavity coupling system
  • On-chip tunable optical isolator based on active-passive optical micro cavity coupling system
  • On-chip tunable optical isolator based on active-passive optical micro cavity coupling system

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Embodiment

[0024] The process of realizing controllable optical isolation of the on-chip tunable optical isolator based on the active-passive optical microcavity coupling system of the present invention is as follows:

[0025] 1) Draw a single-mode optical fiber with a diameter of 1-5 μm by high-temperature stretching method, and fix the optical fiber horizontally on the translation stage;

[0026] 2) Set up a suitable optical path so that the probe light and pump light are synthesized into one beam through a wavelength division multiplexer (WDM) and enter port 1, and then connect to WDM from port 2 to separate the probe light and pump light to connect to the detector and pump light respectively. An oscilloscope to monitor changes in the transmission spectrum;

[0027] 3) Prepare and select suitable active and passive microcavities, and process the shape of the substrate to facilitate close coupling of the microcavities. They have a mode with a wavelength difference of less than 0.2nm n...

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Abstract

The invention discloses an on-chip tunable optical isolator based on an active-passive optical micro cavity coupling system. The on-chip tunable optical isolator comprises an active optical micro cavity (1), a passive optical micro cavity (2), a first optical fiber (3) and a second optical fiber (4). The first optical fiber (3) is coupled to the active optical micro cavity (1). The active optical micro cavity (1) is coupled to the passive optical micro cavity (2). The second optical fiber (4) is coupled to the passive optical micro cavity (2). The optical isolator of the invention has the characteristics of high sensitivity, wide tunable range, simple preparation and easy integration.

Description

technical field [0001] The invention belongs to the field of micro-optical elements, in particular to a micro-ring core optical microcavity tunable optical isolator on a chip. Background technique [0002] An optical isolator, similar to an electric diode, is a device that allows light to pass in one direction and prevents it from passing in the opposite direction. Optical isolators play an important role in optical fiber communication, optical information processing systems, optical fiber sensing, and precision optical measurement systems. With the rapid development of photonic chips, photonics is developing towards integration, and the demand for micro-optical components that can realize functions such as on-chip optical communication, optical storage, optical switching, and optical computing is becoming more and more urgent. Optical isolators are among them. Indispensable element. [0003] Traditional large-scale isolators cannot be integrated at the micro-nano scal...

Claims

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Application Information

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IPC IPC(8): G02B6/26
Inventor 姜校顺华士跃常龙杨超肖敏
Owner NANJING UNIV
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