The principle of Single Wavelength BiDi Transceiver

The single wavelength, bi-directional(SWBiDi) transceiver uses one fiber and one wavelength for a simultaneous communication in both directions. It can be widely used in the optical transport networks, access networks, wireless backhaul networks, and private transmission networks since it can save in the capital expenditure and the operational expenditure.

Comparison of various transmission technologies

Duplex transceiver uses two fibers, one for upstream, the other for downstream. The cost is high.

Two wavelengths BiDi transceiver uses one fiber, but two wavelengths for a simultaneous communication in both directions. Transceivers at two ends have to be different, which increases the capital and operational cost. In addition, in a WDM-BiDi system, each channel cannot have a 100% dedicated bandwidth for both directions simultaneously since all the subscribers must share a common wavelength in one direction.

SWBiDi transceiver uses one fiber and one wavelength for a simultaneous communication in both directions. All the transceivers are identical. The cost is low.

Note.1: If use APC connector, Return Loss can be mitigated, and the transmission distance can be longer than 80km.

Examples of SWBiDi applications

The data rate of SWBiDi transceiver can be from 155Mb/s to 10Gb/s. The transmission distance can be from 2km to 40km. If use APC connector, the distance can be longer than 80km.

评论

发表评论

此博客中的热门博文

What are the types of long-distance transceiver modules?

Among SFP , SFP+ , XFP , 40G, and  100G transceiver modules  , there are long-distance transceiver modules. Among them, the long-distance SFP+ optical module uses EML laser parts and photodetector components. Various improvements have reduced the power consumption of the optical module and improved accuracy; the long-distance 40G optical module uses a driver and modulation unit in the transmit link to receive The link uses an optical amplifier and a photoelectric conversion unit, which can achieve a maximum transmission distance of 80km, which is far greater than the optical transmission distance of the existing standard 40G pluggable optical module. In the actual usage of long-distance transceiver modules, in many cases, the maximum transmission distance of the module cannot be reached. The reason being a specific degree of dispersion will occur during the transmission of optical signals in the optical fiber. To solve this problem, long-distance transceiver modules use Only...
阅读全文

Talk About 10GBASE-T and 10G SFP+ Transceiver Module

10GBASE-T transceiver module and SFP+ optical transceiver are two of the most widely used 10G network connectivity. 10GBASE-T Copper Transceiver Applied initially in the data centre and the horizontal cabling system,  10GBASE-T transceiver  module is a new 10GE PHY using the existing MAC (Media Access Controller). It preserves the 802.3/Ethernet frame format at the MAC Client service interface. 10GBase-T works at 100 meters for Cat6a cable and up to 50 meters for Cat6 cable. It provides flexibility, low cost transmission media, and is backward-compatible with existing 1GbE networks. 10G SFP+ Optical Transceiver 10G SFP+ transceiver can be an enhanced version of the  SFP transceiver  that supports data rates up to 16 Gbit/s. It supports 8 Gbit/s Fibre Channel, 10 Gigabit Ethernet and Optical Transport Network standard OTU2. SFP+ optical transceiver’s connector is duplex LC, and it operates on LC fibre patch leads. SFP+ transceiver is classified in different ty...
阅读全文

OEMfibers QSFP28 CWDM4 Optical Module Overview

 100G CWDM4 is also a multi-source protocol (MSA). The 100G CWDM4 optical module introduces WDM technology and uses a duplex LC interface. When used with single-mode fiber, the transmission distance can reach 2km. The transmission rate of the 100G QSFP28 CWDM4 optical module is 103.1Gbp, which is mainly used in computing, high-frequency trading and other fields. Its cost is definitely significantly higher than that of the QSFP28PSM4 optical module. Through coarse wavelength division multiplexing (CWDM) technology, the  QSFP28 CWDM4 modules  multiplexes four wavelengths of 1270nm, 1290nm, 1310nm and 1330nm onto a single mode fiber for transmission. 1.Optical module package The optical module package found in the 100G QSFP28 CWDM4 optical module is QSFP28, which is an optical module that can be used to support 100G transmission. It provides an ideal solution for the ever-increasing transmission rate of ultra-large data centers. The package size of QSFP28 optical modules can...
阅读全文