基于单一SOA的PolSK信号超快速全光波长转换资源-CSDN文库

13 浏览量 2021-03-28 18:14:51 上传评论收藏 392KB PDF 举报

资源推荐

资源详情

资源评论

Opt Quant Electron (2015) 47:279–296

DOI 10.1007/s11082-014-9912-4

Single SOA based ultrafast all-optical wavelength

conversion for PolSK signal

Li Pei-li · Zhang Yi · Xu En-ming

Received: 2 December 2013 / Accepted: 5 March 2014 / Published online: 23 April 2014

Abstract A novel ultrafast tunable all-optical wavelength conversion for polarization-shift-

keying (PolSK) signal based on dual-pump four-wave mixing (FWM), including parallel

dual-pump FWM and orthogonal dual-pump FWM, in a single semiconductor optical ampli-

ﬁer (SOA) is proposed. A comprehensive broad-band dynamic model of the all-optical wave-

length converter based on parallel dual-pump FWM and orthogonal dual-pump FWM in SOA

is developed, for the ﬁrst time to our knowledge. By numerical simulation, the proposed all-

optical wavelength conversion is realized at 40 Gbit/s. The effects of the powers of input

waves and wavelength detuning on the conversion efﬁciency of the wavelength converter are

theoretically investigated in detail. The results indicate that, due to using the PolSK mod-

ulation format, this scheme is free of pattern effect. In addition, a wide tuning range can

be obtained. The proposed all-optical wavelength conversion for PolSK signal is robust and

potential for applications in future optical networks in terms of simple implementation and

high speed operation.

Keywords All-optical wavelength converter · Polarization-shift-keying ·

Dual-pump four-wave mixing · Semiconductor optical ampliﬁer

1 Introduction

In recent years, various advanced modulation formats have been developed to cope with the

demerits of amplitude-shift-keying (ASK) formats, such as the chromatic dispersion, nonlin-

ear effects, and noise in high-speed long-haul optical communication systems. Polarization-

shift-keying (PolSK) formats, which use the state of polarization of a fully polarized lightwave

carrier as the information-bearing parameter, have been extensively investigated due to their

unique virtues (Ciaramella et al. 2008; D’Errico et al. 2006; Matalgah and Radaydeh 2005;

L. Pei-li (

) · Z. Yi · X. En-ming

College of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications,

Nanjing 210046, People’s Republic of China

e-mail: lipl@njupt.edu.cn

123

280 L. Pei-li et al.

Benedetto et al. 1995). Extinction ratio and signal to noise ratio using PolSK formats are

superior to using intensity formats. PolSK formats are less sensitive to phase noise of the

transmitting lasers in comparison with other coherent transmission schemes. So PolSK may

become one of the novel chosen formats for future long-haul communications.

All-optical wavelength conversion is a promising technique to avoid blocking in future

wavelength-routed all-optical networks. There have been a variety of wavelength conversion

techniques using many approaches based on nonlinear effects, including cross-gain modula-

tion (XGM), cross-phase modulation (XPM), four-wave mixing (FWM), in semiconductor

optical ampliﬁer (SOA) or nonlinear ﬁbers (Wang et al. 2005; Fok and Shu 2007; Dong et

al. 2008; Pei-li and Wei-hua 2011; Han et al. 2007). However, most wavelength conversion

techniques are mainly focused on ASK formats and phase-shift-keying (PSK) formats. Up

to now, only a few wavelength conversion schemes for PolSK format have been proposed

(Pei-li and Wei-hua 2011; Han et al. 2007). So it is highly desirable to explore the wavelength

conversion for PolSK formats.

It is difﬁcult to preserve the original polarization information of an input signal by using

the wavelength conversion schemes based on XGM and XPM. FWM effect has the polariza-

tion property, as well as the merits of transparency to data rate and format. Therefore, it would

be the most promising candidates for wavelength conversion of PolSK formats. Conventional

single-pump FWM in SOA has two major drawbacks: the conversion efﬁciency decreases

rapidly when wavelength detuning is increased (Agrawal 1988), and there is a strong depen-

dence of the conversion efﬁciency on input signal polarization. These drawbacks impose

signiﬁcant constraints on the practical utilization of the FWM technique. Dual-pump FWM

technique can overcome the problem of the dependence of conversion efﬁciency on wave-

length detuning and wide range polarization -insensitive wavelength conversion has been

achieved (Wong and Tsang 2003; Hsu et al. 2004; Chow et al. 2004; Hong et al. 2004; Hsieh

et al. 2004; Wu et al. 2009).

In this paper, we propose a novel ultrafast tunable all-optical wavelength conversion for

PolSK signal based on dual-pump FWM, including parallel dual-pump FWM and orthogonal

dual-pump FWM, in single SOA. Due to the constant intensity nature of the PolSK signal,

pattern-dependent degradation can be reduced in this SOA-based device. Furthermore, this

scheme can obtain a wide tuning range and provide ultrafast operation in virtue of using the

dual-pump FWM effect. The proposed all-optical wavelength conversion only uses a single

SOA, so it is simple and compact.

Although some experimental investigations of wavelength conversion based on dual-

pump FWM have been reported, a few theoretical studies have been carried out. The most

common and simple solution for dual-pump FWM in SOA is “lumped” model which has

adopted some assumptions and approximations, such as FWM effect in SOA is regarded

as a lumped saturated gain followed by third-order nonlinearity and ampliﬁed spontaneous

emission (ASE) noise, and gain spectrum and ASE spectrum are assumed ﬂat respectively

(Chow et al. 2004; Hong et al. 2004). So it can’t be used to analyze the optical ﬁelds and the

carriers in SOA versus time and space. In Ref. Hsieh et al. (2004), a time-domain simulation

model is present to investigate the wavelength conversion based on orthogonal dual-pump

FWM in SOA. In this model, a converted wave is ignored; this is a good approximation for

low input signal power levels. However, it is insufﬁcient when the input signal is strong. In

Ref. Wu et al. (2009), a dynamic model for non-degenerate FWM in SOA is presented to

investigate the multifunction optical format conversion module. In this model, all input waves

are supposed to be co-polarized. Up to now, a comprehensive broad-band dynamic model

of dual-pump FWM in SOA, including parallel dual-pump FWM and orthogonal dual-pump

FWM, has not be present. In this paper, for the ﬁrst time to our knowledge, a comprehensive

123

Ultrafast all-optical wavelength conversion 281

broad-band dynamic model of the tunable wavelength converter based on dual-pump FWM

in SOA is developed. Using this model, dual-pump FWM scheme in SOA, including parallel

dual-pump FWM and orthogonal dual-pump FWM, can be investigated more accurately.

The rest of the paper is organized as follows. Section 2 illustrates the operation principle

of the proposed all-optical wavelength conversion for PolSK signal. In Sect. 3, a compre-

hensive broadband model is presented in detail. In Sect. 4, the wavelength conversion for

PolSK signal is theoretically realized at 40 Gbit/s using our broadband model. In addition, the

effects of the powers of input waves and wavelength detuning on the conversion efﬁciency

of wavelength conversion for PolSK signal are theoretically investigated in detail. Finally,

the main conclusions are summarized in Sect. 5.

2 Operation principle

Figure 1 shows the schematic diagram of the proposed ultrafast all-optical wavelength con-

version for PolSK signal. A PolSK signal (S) at ω

andtwopumpwaves(P1andP2)atω

and ω

are combined and injected into the SOA. Polarization control (PC) 1 and PC2 are

used to align the polarizations of two input pump waves. By adjusting PC3, the polarization

angles between pump wave and two components of input PolSK signal are set to 45

◦

, respec-

tively. To simplify, we assume two polarization components of the input PolSK signal are

aligned with the principal axes of the SOA and correspond with TE mode and TM mode (S

and S

) respectively. Accordingly, in the SOA, P1 and P2 are split into two components

(P1

and P1

;P2

and P2

) respectively. In this scheme, provided that the wavelength

interval between P1 and P2 is small, whereas the pumps and PolSK signal are at wavelengths

far enough to neglect their interaction. In this case, two parallel dual-pump FWM processes

(due to interaction among S

,P1

and P2

, and interaction among S

, P1

and P2

)

and two orthogonal dual-pump FWM processes (due to interaction among S

,P1

and

, and interaction among S

,P1

and P2

) can occur in the SOA, as well as FWM

process (due to interaction between P1 and P2). And a number of FWM products (C1, C2,

C3 and C4 at 2ω

− ω

, 2ω

− ω

,ω

+ ω

− ω

,ω

+ ω

− ω

respectively),

which have two components corresponding with TE mode and TM mode, are generated.

Among these FWM products, the polarizations of C3 and C4 are in parallel with those of

S. Therefore, the ultrahigh-speed all-optical wavelength conversion for PolSK signal can be

realized by ﬁltering the conjugate wave C3. Figure 2 presents the polarizations of the waves

and the optical spectra of the all-optical wavelength conversion for PolSK signal based on

the dual-pump FWM.

To prove the effectiveness of the all-optical wavelength conversion for PolSK signal, a

polarization beam splitter (PBS) is used as the data decoder of PolSK format, as shown in

Fig. 1. After the PBS, two polarization components of PolSK signal are detected by the

communication signal analyzer.

3 Broad-band model

In this section, a comprehensive broad-band dynamic model of the all-optical tunable wave-

length converter for PolSK signal based on dual-pump FWM in SOA is developed. As men-

tioned above, in this scheme, parallel dual-pump FWM and orthogonal dual-pump FWM both

occur in the SOA. So fourteen waves, including three input waves and four generated waves

with two polarization components respectively, are taken into account. In this model, critical

123

剩余17页未读，继续阅读

评论收藏

内容反馈

weixin_38720256

粉丝: 4
资源: 947

基于单一SOA的PolSK信号超快速全光波长转换

使用集成的基于SOA的Turbo-Switch电路对PAM-4信号进行片上全光波长转换

基于SOA的XGM全光波长变换光信号啁啾效应分析

基于SOA的平行双抽运结构偏振复用OFDM信号的全光波长变换

微波频移键控信号的光子产生

双信道偏振态位移键控光传输系统的交叉偏振调制特性研究

基于混沌映射的偏振移位键控光通信系统

一种大气激光通信系统抗干扰调制/解调技术

Design of ultrafast all-optical PolSK DMUX based on semiconductor optical amplifiers

正交调制应用可实现下一代PON的灵活迁移和无色ONU

偏振态移位键控光混沌通信系统的保密性

tayak1_mongo：使用mongodb的Back_Polsk_Calc

High-speed polarization-shift keying: experimental and numerical investigation

论文研究-High-speed polarization-shift keying: experimental and numerical investigation.pdf

Qt 5实现串口调试助手 （源工程文件、0积分下载）

【SystemVerilog】路科验证V2学习笔记（全600页）.pdf

AutoSAR标准协议4.2.2

光伏-储能并网系统仿真.rar

XCP协议的规范文档

GD32替换STM32注意事项.pdf

NPPJSONViewer.zip

蓝牙BLE协议中文版.pdf

CANoe通过CAPL脚本实现自动测试

AD20官方中文教程.pdf

完整版 Microsoft.ACE.OLEDB.12.0 驱动下载.rar

电路分析基础第二版PDF电子书免费下载

qt样式表一键生成（花狗Fdog）

Tangent免费.rar

最新资源

Qt 5实现串口调试助手（源工程文件、0积分下载）