硅热光路由器：基于Mach-Zehnder光开关的可重配置4端口无阻塞设计

2 浏览量更新于2024-08-26 收藏 999KB PDF 举报

"这篇研究论文介绍了一种基于Mach-Zehnder光开关的可重配置无阻塞4端口硅热光路由器。该路由器在所有9种路由状态下，其光信噪比（OSNR）在1525至1565nm波长范围内均大于15dB，支持50个波分复用（WDM）通道，每个通道的数据速率可达32Gbps。路由器的平均能效约为16.3fJ/bit，响应时间为19微秒。" 这篇论文详细阐述了利用Mach-Zehnder光开关技术构建的一种高效、灵活的硅基热光路由器设计。Mach-Zehnder光开关是一种常见的光学元件，通过改变光路中的温度来控制光的传播路径，实现光信号的开关和路由功能。在这种4端口路由器中，每个端口都可以独立地处理多个波分复用通道，这极大地提高了网络带宽和数据传输效率。论文中提到，该路由器在1525至1565nm的通信窗口内具有良好的光信噪比，这意味着它可以在标准的光纤通信波段内稳定工作，保证了信号的质量和可靠性。光信噪比是衡量光通信系统性能的重要指标，大于15dB的OSNR意味着在传输过程中信号的损失较小，可以有效降低误码率。此外，该路由器能够处理50个WDM通道，每个通道的数据速率高达32Gbps，这意味着总的数据传输速率可达到1.6Tbps，这对于数据中心和高速网络通信来说具有显著的价值。WDM技术允许在同一根光纤中同时传输多个不同波长的光信号，从而大大增加了光纤的容量。路由器的平均能量效率为16.3fJ/bit，这是一个非常低的能耗值，表明该设备在执行高数据速率传输时具有出色的能源效率。低能耗对于大规模部署的网络基础设施至关重要，因为它可以减少运行成本并减小环境影响。最后，响应时间是19微秒，这意味着路由器可以在极短的时间内完成对光信号的路由切换，这对于实时性和高效率的网络应用至关重要。快速的响应时间确保了网络的低延迟和高吞吐量。这项研究展示了基于Mach-Zehnder光开关的硅热光路由器在实现高性能、低能耗和快速响应的网络路由方面的潜力，对于未来光通信网络的发展具有重要的理论和实践意义。

Reconfigurable nonblocking 4-port silicon

thermo-optic optical router

based on Mach–Zehnder optical switches

Lin Yang,* Yuhao Xia, Fanfan Zhang, Qiaoshan Chen, Jianfeng Ding, Ping Zhou, and Lei Zhang

State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences,

P.O. Box 912, Beijing 100083, China

*Corresponding author: oip@semi.ac.cn

Received February 3, 2015; revised February 19, 2015; accepted February 26, 2015;

posted February 26, 2015 (Doc. ID 233679); published March 24, 2015

We demonstrate a reconfigurable nonblocking 4-port silicon thermo-optic optical router based on Mach–Zehnder

optical switches. For all optical links in its 9 routing states, the optical signal-to-noise ratios are larger than 15 dB in

the wavelength range from 1525 to 1565 nm. Each optical link of the optical router can manipulate 50 wavelength-

division-multiplexing channels with the data rate of 32 Gbps for each channel in the same wavelength range. Its

America

OCIS codes: (130.4815) Optical switching devices; (200.4650) Optical interconnects.

http://dx.doi.org/10.1364/OL.40.001402

With chip multiprocessors (CMPs) continuously requir-

ing larger communication bandwidths, metallic-based

electrical network-on-chip (NoC) gradually becomes a

bottleneck for improving the performance of CMP due

to its high power consumption, limited bandwidth, and

long latency [

1,2]. Photonic NoC is considered as a poten-

tial solutio n to overcome the limitations of its electrical

counterpart [

1,2].

As a building block of photonic NoC, optical router has

received much attention in recent years [

3–15]. Several

strict nonblocking 4-port optical routers based on micro-

ring optical switches have been demonstrated [

9,10]. A

universal method for constructing a strict nonblocking

N-port optical router based on microring or Mach–

Zehnder (MZ) optica l switches have also been reported

[

11]. These optical routers have the same characteristic

that only one routing path is required to establish the

same optical link in different routing states. Thus, their

routing algorithms are quite simple. However, these op-

tical routers use redundant switch elements to avoid the

possible conflict among their optical links and thus are

not efficient in footprint and power consumption.

Removing the redundant switch elements can improve

the performances of the optical routers in these two as-

pects. For example, the strict nonblocking 4-port optical

routers use 8 switch elements to establish 9 optical links

[

9,10], while a partly reconfigurable nonblocking 4-port

optical router only uses 6 switch elements to establish

9 optical links [

12]. A reconfigurable nonblocking optical

router makes full use of the optical links of switch ele-

ments and the combination of routing paths and thus

is more efficient in footprint and power consumption.

For a reconfigurable nonblocking optical router, possibly

different routing paths are required to establish the

same optical link in different routing states. A universal

method for constructing a reconfigurable nonblocking

N-port optical router based on microring or MZ optical

switches has been reported [

13]. In this Letter, we dem-

onstrate a reconfigurable nonblocking 4-port silicon

thermo-optic optical router composed of 4-MZ optical

switches. Compared with those based on microring

optical switches [

14,15], the optical router has a much

larger optical bandwidth, which enables its each optical

link to manipulate 50 wavelength-division-multiplexing

(WDM) channels with the data rate of 32 Gbps for each

channel in the wavelength range from 1525 to 1565 nm.

As shown in Fig.

1(a), the 4-port optical router consists

of 4-MZ optical switches S

–S

. Four input ports are

labeled as I

, I

, and I

, and four output ports are

labeled as O

, O

, and O

. We denote the optical link

from input port i to output port j as I

→ O

. Figure 1(b)

shows the schematic of the MZ optical switch. When the

MZ optical switch is on the “bar” status, two incident

lights are guided from its input port I

∕I

to its output

port O

∕O

. When the MZ optical switch is on the “cross”

status, two incident lights are guided from its input port

∕I

to its output port O

∕O

Table

1 shows the statuses of the 4-MZ optical switches

in the total 9 routing states of the optical router. Blocking

only occurs when one optical switch is on the “bar”

status in one optical link while on the “cross” status in

another optical link, and the two optical links sho uld

be established simultaneously in a specific routing state.

As shown in Table

1, blocking does not occur in the 9

routing states of the optical router, and therefore, it is

nonblocking.

Each optical switch consists of two 2 × 2 multimode-

interference (MMI) couplers and two modulation arms.

The MMI coupler is 6 μm in width and 43 μm in length.

Fig. 1. Schematics of the optical router (a) and the MZ optical

switch (b).

1402 OPTICS LETTERS / Vol. 40, No. 7 / April 1, 2015

下载后可阅读完整内容，剩余3页未读，立即下载

weixin_38677585

粉丝: 5
资源: 938

硅热光路由器：基于Mach-Zehnder光开关的可重配置4端口无阻塞设计

基于Mach-Zehnder光交换机的N端口严格无阻塞光路由器，用于片上光子网络

基于Mach-Zehnder的五端口硅路由器，用于光互连

基于Fano谐振的Mach-Zehnder光开关，采用双总线耦合环形谐振器作为两光束干涉仪

实验演示16×16硅基Mach-Zehnder光开关阵列

硅基Mach-Zehnder光开关：研究进展与关键技术

硅基Mach-Zehnder光开关实现高效异或/同或门的研究

GaAs 2×2 Mach-Zehnder光波导开关调制器

GaAs 1×4 Mach-Zehnder型光开关列阵研究

基于Mach-Zehnder干涉的湿度光纤传感器的研究

基于Mach-Zehnder干涉仪和光纤光栅型光分插复用器

最新资源