Why To Use O-BAND In Optical Communication?

SINGAPORE - July 15, 2024 - PRLog -- The higher the speed of optical communication, the more affected by dispersion. The "low loss wavelength region" optical band from 1260nm to 1625nm is most suitable for transmission in optical fibers.
The O-band wavelength ranges from 1260nm to 1360nm. The signal distortion caused by light dispersion in this band is minimal and the loss is low, which is an early optical communication band. Hence the name O-band (O-band), where O means "Orignal".

O-band In Perfect Availability For 5G Front-hual
The unique advantage of the O-band is that it is in the low dispersion region, and under NRZ modulation, as the rate increases, the sensitivity to dispersion will also increase. "The advantages of O-band, low dispersion and low cost, can provide guarantees for 5G front-hual transmission performance."
Currently, the O-band LWDM applied to 5G front-haul adopts a mixed rate WDM system of 25Gb/s and 10Gb/s. 25Gb/s request O-band DWDM, 12-channel BiDi, 800GHz interval, using DML+PIN+TEC; The 10Gb/s request CWDM, 12-channel BiDi, 20nm interval, using DML+PIN. In terms of standardization, 25Gb/s LWDM meets the ITU-T standard definition of DWDM.

O-BAND DWDM Non-coherent Transmission Solution
Fiberstamp's O-BAND DWDM Non-coherent long-distance subsystem are including 100G QSFP28 PSM DWDM4 and DWDM1. DWDM4 is built upon a 4x25G NRZ MPO connector up to 80km and DWDM1 adopts 150Ghz O-BAND DWDM 100G PAM4 silicon photonics duplex LC connector up to 30km.

O-BAND Next-generation Coherent Communication Solution
The specialist of transmission technology put forward a hypothesis that "cloud and hyperscaler have promoted the PAM4 industry in the past ten years, and the AI cluster may incubate the coherent 20km scene in the next ten years". There is also an articel about coherent from Marvel, it says that AI has higher bandwidth requirements than traditional cloud servers, and as data centers' demand for bandwidth grows, they will need to scale data centers in multiple dimensions, including building larger data centers and adding longer internal connections. The O-Band Coherent has been in discussion for years but has not yet to be deployed commercially on a large scale.

About FIBERSTAMP
As an Open Optical Network Mail Carrier, FIBERSTAMP is committed to providing global users with Economic, Professional and Efficient Open Optical Network Solutions. The current main products cover 25G/50G/100G/200G/400G optical transceiver modules, Active Optical Cables (AOCs) and Direct Attached Cables (DACs), 100G/200G/400G coherent optical modules and UHD video transmission products. Meanwhile, through long-term deep digging in new technology, FIBERSTAMP is rapidly evolving to the promising era of 800G and CPO based on Silicon Photonics! For more information, please feel free to visit https://www.fiberstamp.com/ or contact sales@fiberstamp.com.