Novel FSK heterodyne single-filter detection system using no IF frequency lock
- 1 June 1989
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 1 (6) , 140-141
- https://doi.org/10.1109/68.36015
Abstract
A frequency-shift keyed (FSK) modulation/single-filter detection system which does not require an intermediate-frequency (IF) locking loop is reported. This system utilizes a laser frequency-locked to an atomic line (krypton 2p/sub 8/-3d/sub 1/" transition at 1.5224 mu m) as both transmitter and local oscillator. As a result, communication can be initiated without any manual adjustment to match the wavelengths of transmitter and local oscillator lasers. No significant degradation in the receiver sensitivity was observed due to the slight frequency dither used to lock the laser frequency to an atomic transition line.Keywords
This publication has 6 references indexed in Scilit:
- High-capacity coherent lightwave systemsJournal of Lightwave Technology, 1988
- High performance tunable 1.5 μm InGaAs/InGaAsP multiple quantum well distributed Bragg reflector lasersApplied Physics Letters, 1988
- Performance of a frequency-locked 1.3μm DFB laser under 50Mbit/s FSK modulationElectronics Letters, 1988
- Frequency-locking of a 1.5μm DFB laser to an atomic krypton line using optogalvanic effectElectronics Letters, 1988
- Frequency stabilisation of a 1.3 μm DFB laser to an argon line using optogalvanic effectElectronics Letters, 1988
- Noncoherent detection of coherent lightwave signals corrupted by phase noiseIEEE Transactions on Communications, 1988