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Optical structure for raising suppression ratio and fineness of F-P chamber style tunable filter

An optical device and optical filter technology, applied in the coupling of optical waveguides, optics, optical components, etc., can solve the problems of inter-cavity interference, difficulty in two-stage synchronous tuning, etc., and achieve the effect of high suppression ratio and finesse

Inactive Publication Date: 2005-02-02
GUANGXUN SCI & TECH WUHAN
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  • Abstract
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Problems solved by technology

However, the cascading method must use more than one same or different F-P cavity, which will cause problems such as inter-cavity interference, coupling between two stages, and difficulty in synchronous tuning of two stages.

Method used

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  • Optical structure for raising suppression ratio and fineness of F-P chamber style tunable filter
  • Optical structure for raising suppression ratio and fineness of F-P chamber style tunable filter
  • Optical structure for raising suppression ratio and fineness of F-P chamber style tunable filter

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Embodiment Construction

[0046] The following will be described in detail in conjunction with the accompanying drawings and embodiments.

[0047] Such as image 3 Shown is a schematic diagram of an optical device that uses a dual-core waveguide to achieve two passes through the F-P cavity. The optical structure is composed of a double-core waveguide 1.1, an F-P cavity 2, and a plane reflector 3.1; the components through which the light beam passes in sequence are: a double-core waveguide 1.1, an F-P cavity 2, a plane reflector 3.1, an F-P cavity 2, and a double-core waveguide 1.1. The structure is simple, compact and easy to realize. The plane mirror 3.1 is a mirror surface with sufficiently high mirror flatness.

[0048] Such as Figure 4.1 Shown is a schematic diagram of an optical device that uses a right-angle two-way mirror to achieve two passes through the F-P cavity. The optical device is composed of signal input unit 1, F-P cavity 2, right-angle two-way mirror 3.2, and signal output unit 5...

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Abstract

The optical structure applies one or a pair of reflectors to make light beam pass through F-P cavity twice or for more times. It is composed of signal input unit, F-P cavity, reflector a, reflector b and signal output unit. The elements passed through in sequence separately by the light beam are signal input unit, F-P cavity, reflector a, F-P cavity, reflector b, F-P cavity, reflector a, F-P cavity and signal output unit. It can be used widely in modern DWDM optical network.

Description

technical field [0001] The invention relates to an F-P cavity (Fabry-Perot cavity, Fabry-Perot, F-P cavity for short) type tunable optical filter, in particular to an optical structure that passes through the F-P cavity twice or multiple times, and the optical structure can improve The fineness and rejection ratio of the F-P cavity tunable optical filter, the F-P cavity tunable optical filter is widely used in modern dense wavelength division multiplexing system (Dense Wavelength Division Multiplexing, referred to as DWDM) optical network. Background technique [0002] F-P cavity tunable optical filter is the filter with the simplest structure and the most widely used. The prototype of this component is block-shaped. After the appearance of optical fiber, it can also be composed of optical fiber, which greatly improves its performance; the emergence of micro-electromechanical system (MEMS for short) technology makes F-P The application of cavity tunable optical filter is ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/293G02B6/34G02F1/365H04J14/02
Inventor 胡强高孙莉萍许远忠
Owner GUANGXUN SCI & TECH WUHAN
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