Apparatus and method of non-sampling-based Q-factor measuring

Details Apparatus and method of non-sampling-based Q-factor measuring Apparatus and method of non-sampling-based Q-factor measuring

2005-12-30

2009-08-18

Chowdhury, Tarifur (Department: 2886)

Optics: measuring and testing

For optical fiber or waveguide inspection

C398S043000, C398S110000

Reexamination Certificate

active

07576846

ABSTRACT:
A non-sampling-based Q-factor measuring apparatus and method use a power conversion module to transform the power variation of inputted optical signals in time domain into the variation in other domains, such as optical wavelength, optical polarization and different output ports of optical elements. Taking optical wavelength as an example, different levels of power variation respond different outputs of wavelength variation through the use of a power-to-wavelength conversion module. An optical filter then separates the inputted optical signals with different wavelengths. The power average of a wavelength for its corresponding optical signals is further calculated by a photo detector. Thereby, the information of the power variation for the inputted optical signals at levels1and0can be obtained, and the Q-factor for the inputted optical signals is easily measured.

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Q-factor Monitoring in Optical Channel Performance Monitoring Techniques Dar-Zu Hsu, Chun-Liang Yang CCL Technical Journal Sep. 25, 2005.
Simple Measurement Of Eye Diagram And BER Using High-Speed Asynchronous Sampling Ippei Shake, Member, IEEE, Hidehiho Takara, Member, IEEE, and Satoki Kawanishi, Member IEEE, Memer, OSA 2004 IEEE.

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