Parallel double-chamber tunable fiber Fabry-Perot filter

A Perot filter and filter technology, applied in the coupling of optical waveguides, optics, instruments, etc., can solve the problems that Perot filters cannot

Inactive Publication Date: 2009-12-16
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing tunable optical fiber Fabry filter cannot be used for the measurement of the emission spec

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  • Parallel double-chamber tunable fiber Fabry-Perot filter
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Embodiment Construction

[0013] Specific implementation plan

[0014] The present invention will be further described below in conjunction with the drawings and embodiments.

[0015] The structure of the parallel dual-cavity tunable fiber Fabry-Perot filter of the present invention is as follows figure 1 Shown. The parallel dual-cavity tunable fiber Fabry-Perot filter includes fiber Fabry-Perot filters 1 and 1', a support 2, and a piezoelectric ceramic driver 3. The fiber Fabry-Perot filters 1 and 1'are fixed on the support in parallel On 2, the wavelength is tuned simultaneously under the drive of the piezoelectric ceramic 3.

[0016] The principle that the parallel dual-cavity tunable fiber Fabry-Perot filter of the present invention is applied to the measurement of the emission spectrum of the active device and the simultaneous measurement of the spectrum of the passive device is as follows figure 2 Shown. The light emitted by the active device 4 to be tested is input to the first optical fiber Fabry-...

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Abstract

The invention relates to a parallel double-chamber tunable fiber Fabry-Perot filter comprising two fiber Fabry-Perot filters, a supporting seat and a piezoelectric cermic driver. The two fiber Fabry-Perot filters are connected in parallel to be fixed on the supporting seat and simultaneously tune the wavelength under the drive of the piezoelectric cermic driver; the tardiness and the nonlinearity of the piezoelectric cermic driver have the same influence to the two fiber Fabry-Perot filters; the wavelength calibration parameter of the other fiber Fabry-Perot filter can be simultaneously obtained by calibrating the wavelength of one of the fiber Fabry-Perot filters through a Fabry-Perot etalon and a fiber grating, thereby realizing that one of the filters measures a passive device and the other filter measures the spectrum emitted by an active device.

Description

Technical field [0001] The invention relates to an optical device used in an optical fiber testing and sensing system, in particular to a parallel dual-cavity tunable optical fiber Fabry-Perot filter. Background technique [0002] In the optical fiber testing and sensing system, the tunable optical fiber Fabry-Perot (Fabry-Perot, Fabry-Perot) filter is used for wavelength scanning and is a key component of the wavelength demodulation and spectrum analysis system. The tunable fiber Fabry-Perot filter usually adopts piezoelectric ceramic drive to realize the tuning of the transmission wavelength. Due to the hysteresis and nonlinear response of piezoelectric ceramics, the accurate transmission wavelength of the tunable fiber Fabry-Perot filter cannot be obtained directly from the driving voltage. [0003] The current tunable fiber Fabry-Perot filters are all single cavity structures. For the measurement of passive devices, such as fiber gratings, fiber Fabry Perot sensors, and wavel...

Claims

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Application Information

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IPC IPC(8): G02B6/34G02B26/00G02B26/08
Inventor 江毅唐才杰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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