Special Section on Microwave Photonics: Deep Interactions between Microwaves and Lightwaves

All‐optical correlator based on modal dispersion in multimode fiber

[+] Author Affiliations
Jian Sun, Zhongwei Tan, Tangjun Li, Muguang Wang

Beijing Jiaotong University, Institute of Lightwave Technology, Key Lab of All Optical Network & Advanced Telecommunication Network of EMC, Shangyuncun 3#, Haidian Qu, Beijing 100044, China

Opt. Eng. 55(3), 031119 (Dec 08, 2015). doi:10.1117/1.OE.55.3.031119
History: Received August 13, 2015; Accepted November 3, 2015
Text Size: A A A

Abstract.  We propose and demonstrate an all‐optical correlator based on modal dispersion in a multimode fiber. Many of the modes can be excited in a large core high numerical aperture step‐index multimode fiber under overfilled launching. The incident optical signal is copied into different modes and a time delay is introduced by the modal dispersion. We use a mask with slits as a space filter to select the modes needed. A correlator of the mask and input signal is achieved at the output end. Thanks to the use of modal dispersion, the correlator is nearly independent of the wavelength and bandwidth of the input signal. By adjusting the slits on the mask, the target patterns of the correlator can be changed easily. A radio frequency signal detection is also experimentally demonstrated with this construction.

Figures in this Article
© 2015 Society of Photo‐Optical Instrumentation Engineers

Citation

Jian Sun ; Zhongwei Tan ; Tangjun Li and Muguang Wang
"All‐optical correlator based on modal dispersion in multimode fiber", Opt. Eng. 55(3), 031119 (Dec 08, 2015). ; http://dx.doi.org/10.1117/1.OE.55.3.031119


Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.