TOPSTAR TECHNOLOGY INDUSTRIAL CO., LIMITED
Our Vision--Create Topstar’s home and strive to be a respected Century Enterprise！ Our Mission--Better Communication, Better World ! Our Values--Struggle happily, to be honesty and gratitude, then to
Add to Cart
QSFP28 100G Transceiver LWDM4 30KM EML APD by Single Mode Fiber LC
QSFP28 100G Transceiver
The transceiver module receives 4 channels of 25Gb/s electrical data, which are processed by a 4- channel Clock and Data Recovery (CDR) IC that reshapes and reduces the jitter of each electrical signal. Subsequently, EML laser driver IC converts each one of the 4 channels of electrical signals to an optical signal that is transmitted from one of the 4 cooled EML lasers which are packaged in the Transmitter Optical Sub-Assembly (TOSA). Each laser launches the optical signal in specific wavelength specified in IEEE 802.3ba 100GBASE-ER4 requirements. These 4-lane optical signals will be optically multiplexed into a single fiber by a 4-to-1 optical WDM MUX. The optical output power of each channel is maintained constant by an automatic power control (APC) circuit. The transmitter output can be turned off by TX_DIS hardware signal and/or 2-wire serial interface.
The receiver receives 4-lane LAN WDM optical signals. The optical signals are de-multiplexed by a 1-to-4 optical DEMUX and each of the resulting 4 channels of optical signals is fed into one of the 4 receivers that are packaged into the Receiver Optical Sub-Assembly (ROSA). Each receiver converts the optical signal to an electrical signal. The regenerated electrical signals are retimed and de-jittered and amplified by the RX portion of the 4-channel CDR. The retimed 4-lane output electrical signals are compliant with CEI-28G-VSR interface requirements. In addition, each received optical signal is monitored by the DOM section. The monitored value is reported through the 2-wire serial interface. If one or more received optical signal is weaker than the threshold level, RX_LOS hardware alarm will be triggered.
Parameters
| Fiber Type | Single-mode Cable |
| Connector | LC |
| Lasers and TIA | EML and APD |
| Tx Power | -2.9 to 4.5 dBm |
| Rx Sensitivity | -16.9 to 4.9 dBm |
| Extinction Ratio | 7.0 dB |
| Power Consumption | 4.5 W |
| Single Power Supply | 3.3 V |
PRODUCT FEATURES
APPLICATIONS
FAQ
Q1. Are your transceiver modules compatible with Cisco?
A1: Yes, Topstar transceivers can compatible with Cisco. All the brand Topstar's SFP compatible as the fellowing:Cisco, Nortel, Juniper, 3COM, H3C, Alcatel-lucent, FOUNDRY, D-Link, EXTREME, Ruijie, NETGEAR, ZTE, Enterasys, ZyXEL, Linksys, Ericsson, DCN, Allied, SMC, Brocade, Force10, Hirschmann, Planet, Adtran, ASNTE, Trendnet, BDCOM, BLADE, BITWAY, Telco, Feixun...etc.
Q2. How does your company do regarding quality control?
A2: Every single optic individually tested in our test center , and also tested for compatibility on a variety of different brands of network equipment.
Q3. What are the trade terms?
A3: Lead Time: we keep 40,000pcs SFP in stock ready to ship.
Payment term: T/T, Western Union, Alipay, Paypal, L/C and so on for your option.
Q4. What is operating temperature range of optical modules?
A4: Commercial temperature range(COM) : 0 to 70°C(32 to 158°F)
Extended temperature range(EXT):-5 to 85°C(23 to 185°F)
Industrial temperature range(IND)::-40 to 85°C(-40 to 185°F)
Storage temperature range:-40 to +85°C(-40 to 185°F)
We can supply according to your request.