... Author(s): Roman Rogoziński; Tomasz Kotyczka. Influence of chemcial composition on properties... more ... Author(s): Roman Rogoziński; Tomasz Kotyczka. Influence of chemcial composition on properties of tellurite glass Yb 3+ doped. Author(s ... Author(s): Joanna Pisarska; Lidia Żur; Wojciech A. Pisarski. Excitation energy transfer and optical transitions in heavy metal glasses doubly ...
The results of multifrequency optical fiber ring source with two cascaded frequency shifters are ... more The results of multifrequency optical fiber ring source with two cascaded frequency shifters are presented. Up to 60 UDWDM optical carrier frequencies with extremely stable 2.5 GHz spacing ware obtained.
OECC/ACOFT 2008 - Joint Conference of the Opto-Electronics and Communications Conference and the Australian Conference on Optical Fibre Technology, 2008
The numerical and experimental results of multifrequency optical source are presented. Up to 84 s... more The numerical and experimental results of multifrequency optical source are presented. Up to 84 spectral lines with stable 1.5 GHz spacing ware obtained. The spectrum flatness was improved by equilizing polarization sensitivity of a frequency shifter.
The original numerical and experimental results of multifrequency optical source, based on erbium... more The original numerical and experimental results of multifrequency optical source, based on erbium doped fiber ring configuration are presented. Eleven spectral lines with very stable 1.5 GHz frequency separation were obtained. To achieve uniform amplitudes of optical frequencies, we propose an implementation of a polarization dependent diffraction efficiency equalizer of the acousto-optic shifter.
Seventh International Conference on Education and Training in Optics and Photonics, 2002
For thirty years, the Institute of Electronics and Telecommunication has been teaching students i... more For thirty years, the Institute of Electronics and Telecommunication has been teaching students in the field of telecommunications. In the academic year 1990/91, a course in optical communications was introduced. Currently, within electronics and telecommunication programmes, we offer an undergraduate course entitled: Optotelecommunications, two courses for master level specialities: Optical Networks and Advanced Fiber Optic Systems, and finally, a course for extramural students. We also provide lab projects for Computer Science and Electrotechnics students and contribute to continuous education training. Over the last ten years, a number of students participating in our laboratories has increased seven times. At present, we have two laboratories, offering 40 projects, which fall into 5 categories: basics projects, fundamental projects, applied projects, advanced projects, optical systems. Such a variety of topics allows to offer a flexible choice to suit individual student interests.
In the paper, we presented the results of the research on the properties of erbium doper fiber op... more In the paper, we presented the results of the research on the properties of erbium doper fiber optical sources. We discussed properties and presented results of investigating single mode lasers, focusing on the problem of a beam oscillations at the radio frequencies range. An original method leading to the increase of power efficiency was described. We presented some methods and
In the presented work, we report the original numerical results of the properties of ring optical... more In the presented work, we report the original numerical results of the properties of ring optical frequency comb generators employing the acousto optic frequency shifter (AOFS) and the single stable master laser (ML). A key element of the examined source is the AOFS controlled by the RF generator which determines frequency comb interval and stability. In each loop round-trip, AOFS splits the optical beam into two, where the deflected beam is frequency shifted. The multiple divisions, spectrum shifting and optical beam amplification in the ring configuration result in generating of an optical frequency comb. Performed numerical simulations allow spectral analysis of the generated optical frequency comb. We tested configurations with single and two cascaded AOFS operating at 1.5625 GHz. Calculations were carried out for a variety of input laser powers and different quantity of optical output frequencies whose number was controlled by an optical feedback filter bandwidth. It was shown that for different configurations and component parameters it was possible to obtain 20 - 30 uniform peaks with the amplitude difference of less than 0.5 dBm and OCNR in the range of 35-45 dB. We demonstrated that the main problem of the simultaneous multiwavelength fiber ring laser operation can be overcome by using a non resonant ring configuration with a quasi steady state operation. This method ensures generating of an optical comb with stable carrier frequency spacing. It allows diminishing the interchannel spacing and building up an ultra dense wavelength division multiplexing system.
Abstract:- In this paper we described a structure of an original multiwavelength optical fiber so... more Abstract:- In this paper we described a structure of an original multiwavelength optical fiber source for DWDM systems. In order to obtain a several dozen of optical carriers with highly stable channel spacing of 4.5GHz a single laser source and acousto optic frequency shifter were used. Results of the analysis of the structure properties were presented. Key-Words:- DWDM, EDFA, multiwavelength 1
... Author(s): Roman Rogoziński; Tomasz Kotyczka. Influence of chemcial composition on properties... more ... Author(s): Roman Rogoziński; Tomasz Kotyczka. Influence of chemcial composition on properties of tellurite glass Yb 3+ doped. Author(s ... Author(s): Joanna Pisarska; Lidia Żur; Wojciech A. Pisarski. Excitation energy transfer and optical transitions in heavy metal glasses doubly ...
The results of multifrequency optical fiber ring source with two cascaded frequency shifters are ... more The results of multifrequency optical fiber ring source with two cascaded frequency shifters are presented. Up to 60 UDWDM optical carrier frequencies with extremely stable 2.5 GHz spacing ware obtained.
OECC/ACOFT 2008 - Joint Conference of the Opto-Electronics and Communications Conference and the Australian Conference on Optical Fibre Technology, 2008
The numerical and experimental results of multifrequency optical source are presented. Up to 84 s... more The numerical and experimental results of multifrequency optical source are presented. Up to 84 spectral lines with stable 1.5 GHz spacing ware obtained. The spectrum flatness was improved by equilizing polarization sensitivity of a frequency shifter.
The original numerical and experimental results of multifrequency optical source, based on erbium... more The original numerical and experimental results of multifrequency optical source, based on erbium doped fiber ring configuration are presented. Eleven spectral lines with very stable 1.5 GHz frequency separation were obtained. To achieve uniform amplitudes of optical frequencies, we propose an implementation of a polarization dependent diffraction efficiency equalizer of the acousto-optic shifter.
Seventh International Conference on Education and Training in Optics and Photonics, 2002
For thirty years, the Institute of Electronics and Telecommunication has been teaching students i... more For thirty years, the Institute of Electronics and Telecommunication has been teaching students in the field of telecommunications. In the academic year 1990/91, a course in optical communications was introduced. Currently, within electronics and telecommunication programmes, we offer an undergraduate course entitled: Optotelecommunications, two courses for master level specialities: Optical Networks and Advanced Fiber Optic Systems, and finally, a course for extramural students. We also provide lab projects for Computer Science and Electrotechnics students and contribute to continuous education training. Over the last ten years, a number of students participating in our laboratories has increased seven times. At present, we have two laboratories, offering 40 projects, which fall into 5 categories: basics projects, fundamental projects, applied projects, advanced projects, optical systems. Such a variety of topics allows to offer a flexible choice to suit individual student interests.
In the paper, we presented the results of the research on the properties of erbium doper fiber op... more In the paper, we presented the results of the research on the properties of erbium doper fiber optical sources. We discussed properties and presented results of investigating single mode lasers, focusing on the problem of a beam oscillations at the radio frequencies range. An original method leading to the increase of power efficiency was described. We presented some methods and
In the presented work, we report the original numerical results of the properties of ring optical... more In the presented work, we report the original numerical results of the properties of ring optical frequency comb generators employing the acousto optic frequency shifter (AOFS) and the single stable master laser (ML). A key element of the examined source is the AOFS controlled by the RF generator which determines frequency comb interval and stability. In each loop round-trip, AOFS splits the optical beam into two, where the deflected beam is frequency shifted. The multiple divisions, spectrum shifting and optical beam amplification in the ring configuration result in generating of an optical frequency comb. Performed numerical simulations allow spectral analysis of the generated optical frequency comb. We tested configurations with single and two cascaded AOFS operating at 1.5625 GHz. Calculations were carried out for a variety of input laser powers and different quantity of optical output frequencies whose number was controlled by an optical feedback filter bandwidth. It was shown that for different configurations and component parameters it was possible to obtain 20 - 30 uniform peaks with the amplitude difference of less than 0.5 dBm and OCNR in the range of 35-45 dB. We demonstrated that the main problem of the simultaneous multiwavelength fiber ring laser operation can be overcome by using a non resonant ring configuration with a quasi steady state operation. This method ensures generating of an optical comb with stable carrier frequency spacing. It allows diminishing the interchannel spacing and building up an ultra dense wavelength division multiplexing system.
Abstract:- In this paper we described a structure of an original multiwavelength optical fiber so... more Abstract:- In this paper we described a structure of an original multiwavelength optical fiber source for DWDM systems. In order to obtain a several dozen of optical carriers with highly stable channel spacing of 4.5GHz a single laser source and acousto optic frequency shifter were used. Results of the analysis of the structure properties were presented. Key-Words:- DWDM, EDFA, multiwavelength 1
Uploads
Papers by Piotr Stępczak