思科GLC-SX-MM 1000BASE-SX以太网光模块是一种光通信SFP双纤光模块，额定传输距离可达500米，最大带宽为1Gbps。
GLC-SX-MM光模块工作波长为850nm。1000BASE-SX SFP，兼容IEEE802.3z标准1000BASE-SX标准，使用在传统的50μm多模光纤连接可支持550米传输，在62.5μm光纤分布式数据 接口（FDDI）级的多模光纤支持220米传输。通过激光优化的50μm多模光纤电缆，GLC-SX-MM光模块最多可支持到1公里以上传输。

产品描述：SFP,1000Base-SX千兆光模块,850纳米,多模550米
产品特征
最大传输速率1.25Gbps
850纳米 VCESL Laser发射
典型传输距离550米(多模光纤)
3.3V 电压，TTL逻辑接口
双LC接口，支持热插拔
1类激光器
符合 MSA SFP规范
符合 IEC60825-1标准
工作环境温度: 0℃ to +70℃

应用范围
千兆以太网
光纤通道
其他光纤网络

glc-sx-mm英文规格书参考：
Cisco GLC-SX-MM SFP, Duplex, 1Gbps, 500m, 7.5dB, MMF, 850nm

GLC-SX-MM Features
• Up-to 500m over MMF @ 1Gbps
• 850nm Duplex SFP Transceiver
• 0°C - 70°C Operating Case Temperature
• No Digital optical monitoring capability
• Hot-swappable for SFP LC ports
• Cisco 90 day standard warranty
• Cisco SFP can be covered by SMARTnet
• SFP MSA / IEEE Std 802.3
• Cisco GLC-SX-MM is RoHS compliant
• Cisco 1000BASE-SX Ethernet SFP

Applications
• 1000BASE-SX Ethernet
• Gigabit Ethernet

Description

The Cisco GLC-SX-MM 1000BASE-SX Ethernet transceiver is a Duplex SFP transceiver for
optical communications, rated for distances up to 500m and a maximum bandwidth of 1Gbps.
The GLC-SX-MM transceiver operates at 850nm wavelength.
The 1000BASE-SX SFP, compatible with the IEEE 802.3z 1000BASE-SX standard, operates on
legacy 50 μm multimode fiber links up to 550 m and on 62.5 μm Fiber Distributed Data
Interface (FDDI)-grade multimode fibers up to 220 m. It can support up to 1km over laseroptimized
50 μm multimode fiber cable.
Optical Specifications

Power Budget：(dB) 7.5  Transmit Power (dBm)：Min: -17，Max:-9.5   Receive：Max: 0 Min: -17