PF 2019


Merry christmas and happy new year to all our customers and business partners !


Thermo FBG with high-power optical circulator

6.11.2018 – We can offer new version of Thermo FBG with implemented 3-port or 4-port optical circulator for optical power up to 1000 mW !

More information

New product videos

31.10.2018 – See our new product videos at our new youtube channel!!!

More information

Czech Optical Cluster

1.9.2018 – NETWORK GROUP, s.r.o. is a new member of Czech Optical Cluster which was created with the aim to improve the conditions for optical industry development in the Czech Republic through cooperation of companies, public sector and educational sector in the entire value chain in the field of optics, optomechatronics, photonics, optoelectronics and soft mechanics, including related production, technology and service development in supplier’s and customer’s domain.
More information


Thermo FBG

6.4.2018 – We’d like to introduce our new product Thermo FBG – temperature controlled filter / wavelength reference. Thermo FBG is a high-accurate optical filter based on temperature controlled Fiber Bragg Grating (FBG). Thanks to precise electronic control it could be also used as a wavelength reference with absolute accuracy of ± 1 pm.
More information


Almost 1000 FBGs in our stock!!!

16.1.2018 – You can choose  almost 1000 different FBGs which we’ve prepared for you. You can buy it from 1 pieces for a discounted price 40 €.
More information

PF 2018

15.12.2017 – Merry christmas and happy new year 2018!


FBGs in stock

4.12.2017 – Besides the custom production of FBGs we also offer the FBGs in stock for a discounted price 40 € / 1 piece.
More information


Interrogation unit for up to 640 FBG and FP sensor

27.10.2016 – The interrogation modular system allows the evaluation of large number of FBG (Fiber Bragg Grating) or FP (Fabry-Perot) optical sensors. For more information check our updated datasheet.
More information

New tunable optical filter available

21.10.2016 – New tunable optical filter for manual adjustment of the central wavelength was introduced on the market with unbeatable price! For more information check our updated datasheet.
More information


Low-cost interrogation unit for FBG and FP sensors

19.10.2016 – Compact interrogation unit for measuremnt, evaluation and logging of the static or slow events detected by FBG or FP sensors. For more information check our new  datasheet.
More information


Upgraded FBG production

19.9.2016 – We have upgraded our FBG production. Now we are able to write Bragg gratings structures in the range of wavelengths from 1520 nm up to 1605 nm. Check our new datasheet.
More information


We expand our research activities

7.9.2016 – Within the project FEMLAB: RESEARCH CENTRUM WITH FEMTOSECOND LASER NETWORK GROUP, s.r.o. the new center for micromachining, inspection and testing of sensor structures using Low Temperature Co-fired Ceramics will be established.
More information


The new interrogation unit for FBG sensors coming soon!

14.6.2016 – Compact measuring platform with a unique hardware solution. The unit is designed for evaluation of the static and slow events.
More information


Custom manufacturing of FBG gratings

27.5.2016 – NETWORK GROUP is the OEM manufacturer of the Fiber Bragg Gratings and the Fabry-Perot resonators. These components can be used in the sensing systems and for other areas where the filtering of the optical signal is necessary.
More information


Tunable fiber optic FBG filter

30.4.2016 – Manually tunable optical filter with tuning range of 20 nm and unmatched price on the market.
More information