A novel design of optical CDMA system based on TCM and FFH

Jun-Bin Fang; Zhi-Hai Xu; Hong-bin Huang; Liming Zheng; Shun-er Chen; Wei-ping Liu

doi:10.1117/12.576768

8 February 2005 A novel design of optical CDMA system based on TCM and FFH

Jun-Bin Fang, Zhi-Hai Xu, Hong-bin Huang, Liming Zheng, Shun-er Chen, Wei-ping Liu

Proceedings Volume 5626, Network Architectures, Management, and Applications II; (2005) https://doi.org/10.1117/12.576768
Event: Asia-Pacific Optical Communications, 2004, Beijing, China

Abstract

For the application in Passive Optical Network (PON), a novel design of OCDMA system scheme is proposed in this paper. There are two key components included in this scheme: a new kind of OCDMA encoder/decoder system based on TCM and FFH and an improved Optical Line Terminal (OLT) receiving system with improved anti-interference performance by the use of Long Period Fiber Grating (LPFG). In the encoder/decoder system, Trellis Coded Modulation (TCM) encoder is applied in front of the FFH modulator. Original signal firstly is encoded through TCM encoder, and then the redundant code out of the TCM encoder will be mapped into one of the FFH modulation signal subsets for transmission. On the receiver (decoder) side, transmitting signal is demodulated through FFH and decoded by trellis decoder. Owing to the fact that high coding gain can be acquired by TCM without adding transmitting band and reducing transmitting speed, TCM is utilized to ameliorate bit error performance and reduce multi-user interference. In the OLT receiving system, EDFA and LPFG are placed in front of decoder to get excellent gain flatness on a large bandwidth, and Optical Hard Limiter (OHL) is also deployed to improve detection performance, through which the anti-interference performance of receiving system can be greatly enhanced. At the same time, some software is used to simulate the system performance for further analysis and authentication. The related work in this paper provides a valuable reference to the research.

Citation Download Citation

Jun-Bin Fang, Zhi-Hai Xu, Hong-bin Huang, Liming Zheng, Shun-er Chen, and Wei-ping Liu "A novel design of optical CDMA system based on TCM and FFH", Proc. SPIE 5626, Network Architectures, Management, and Applications II, (8 February 2005); https://doi.org/10.1117/12.576768

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Modulation

Computer programming

Fiber Bragg gratings

Optical amplifiers

Optical design

Signal detection

Passive optical networks

Show All Keywords

Keywords/Phrases

Search In:

Publication Years