NDLI: A mobile broad-band communication system based on mode-locked lasers

Content Provider	IEEE Xplore Digital Library
Author	von Helmolt, C.H. Kruger, U. Kruger, K. Grosskopf, G.
Copyright Year	1963
Abstract	A concept is proposed for a pico-cellular network for broad-band mobile communication on a millimeter-wave basis. How microwave optical-signal-processing techniques based on mode-locked lasers (MLLs), optical modulators, and high-speed photo diodes (PD's) can advantageously be applied in the optical feeder lines of a pico-cellular network at 60 GHz is investigated. The external cavity MLL (at 81.25 GHz) used for the experiments showed a single-sideband (SSB) phase noise of -59 dBc/Hz at 100-Hz offset, when actively locked at 6.25 GHz. With the PD, and limited by the V-band mixer equipment, spectral harmonics up to 100 GHz could be detected. For the downlink configuration, a 400-MHz subcarrier is modulated with a 155-Mb/s data signal and upconverted to 62.9 GHz using an MLL and a fast PD. The upconverted sideband at 62.9 GHz was received with an optical power of -14.3-dBm at a bit-error-rate (BER) equal to 10/sup -9/ without any additional penalty due to transmitting the signal over 3 km of optical fiber. BER measurements at 155 Mb/s down to 10/sup -11/ were made. For the uplink, the digitally encoded RF signal is downconverted also by optical microwave signal processing. A 155-Mb/s data encoded 19.21-GHz signal is downconverted to 460 MHz using a mode-locked laser, an optical modulator, and a 600-MHz optical receiver front end. A receiver sensitivity of -24.5 dBm (BER equal to 10/sup -9/) is demonstrated with the microwave signal being transmitted over a 1-m radio link and 3 km of optical fiber.
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	1424
Ending Page	1430
Page Count	7
File Size	116761
File Format	PDF
ISSN	00189480
Volume Number	45
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Broadband communication Optical modulation Optical receivers Optical signal processing High speed optical techniques Optical sensors Optical fiber networks Optical noise Bit error rate Laser mode locking
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Transmission performance improvement of fiber DFB laser by injection locking

High-Speed Quantum Dot Lasers and Amplifiers for Optical Data Communication

Radio-on-fiber techniques using two-mode injection-locked lasers for broadband millimeter-wave communications

Mode-Locked Quantum-Dot Lasers

Stable harmonically FM mode-locked erbium fiber ring laser incorporating a DFBLD

Turbulence in detuned mode-locked lasers

Frequency stabilized mode locked laser with 1000 finesse intracavity etalon

Monolithic 40-GHz Mode-Locked MQW DBR Lasers for High-Speed Optical Communication Systems

CW injection locking of a mode-locked semiconductor laser as a local oscillator comb for channelizing broad-band RF signals

A mobile broad-band communication system based on mode-locked lasers

Similar Documents

Transmission performance improvement of fiber DFB laser by injection locking

High-Speed Quantum Dot Lasers and Amplifiers for Optical Data Communication

Radio-on-fiber techniques using two-mode injection-locked lasers for broadband millimeter-wave communications

Mode-Locked Quantum-Dot Lasers

Stable harmonically FM mode-locked erbium fiber ring laser incorporating a DFBLD

Turbulence in detuned mode-locked lasers

Frequency stabilized mode locked laser with 1000 finesse intracavity etalon

Monolithic 40-GHz Mode-Locked MQW DBR Lasers for High-Speed Optical Communication Systems

CW injection locking of a mode-locked semiconductor laser as a local oscillator comb for channelizing broad-band RF signals

A mobile broad-band communication system based on mode-locked lasers