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Optical single-side band modulation based optical device measuring method and optical single-side band modulation based optical device measuring device

A single-sideband modulator and single-sideband modulation technology, which is applied to electrical components, electromagnetic wave transmission systems, transmission systems, etc., can solve the problems of small measurement range and adaptability to the working range of optical devices, and achieve the effect of expanding the measurement range

Active Publication Date: 2012-08-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0005] Although the measurement device has high measurement accuracy, limited by the frequency sweep bandwidth of the microwave frequency sweep source (about 40 GHz), it can only measure the transfer function of the optical device within the bandwidth of about 40 GHz at the optical carrier frequency, which is difficult to compare with the optical The working range of the device is easily several THz to adapt to
The small measurement range is the biggest obstacle to the practicality of this technology, but there are no reports of effective solutions

Method used

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  • Optical single-side band modulation based optical device measuring method and optical single-side band modulation based optical device measuring device
  • Optical single-side band modulation based optical device measuring method and optical single-side band modulation based optical device measuring device
  • Optical single-side band modulation based optical device measuring method and optical single-side band modulation based optical device measuring device

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Embodiment Construction

[0032] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0033] The idea of ​​the present invention is to replace the original single narrow-linewidth laser with fixed output wavelength with two parallel tunable narrow-linewidth lasers on the basis of the existing optical device measurement method based on optical single sideband modulation. The method of alternately working two lasers expands the measuring range of the device.

[0034] figure 2 A schematic structural view of the optical device measurement device based on optical single sideband modulation of the present invention is shown, as shown in the figure, the measurement device includes:

[0035] The main control computer controls the optical carrier generation module and the microwave frequency sweep source, stores the transfer functions of each frequency band at the same time, and performs data processing and result display;

[0036] The optical...

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Abstract

The invention discloses an optical single-side band modulation based optical device measuring method. By substituting a narrow linewidth laser with fixed output wavelength in an original measuring device by two tunable narrow linewidth lasers which are connected in parallel and utilizing the method of controlling the two lasers to operate alternatively, the measuring range of the optical single-side band measuring technology is widened from 0.4nm to 40nm or above, and accordingly, testing of response of optical devices to any wavelength in a certain wave band is realized. The invention further discloses an optical single-side band modulation based optical device measuring device and a using method thereof. Compared with existing single-side band measuring technology, measuring range of the measuring device is widened greatly.

Description

technical field [0001] The invention relates to an optical device measurement method and a measurement device, in particular to an optical device measurement method and a measurement device based on optical single sideband modulation, and belongs to the technical fields of optical device measurement and microwave photonics. Background technique [0002] The rapid development of laser technology and related application systems has higher and higher requirements for optical device testing. However, optical measurement technology, especially spectral measurement technology, has rarely made substantial progress in the past ten years, not only making high-performance devices It is difficult to make major breakthroughs in the research of advanced optical devices, which also makes it impossible for high-precision optical devices to exert their maximum performance in optical systems. For example: the minimum bandwidth of Fiber Bragg Gratings (FBG) has been as low as 9 MHz (see [P. Y...

Claims

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Application Information

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IPC IPC(8): H04B10/08H04B10/079
Inventor 潘时龙薛敏赵永久顾晓文唐震宙郭荣辉朱丹
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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