Abstract
The letter presents the results obtained with a densely spaced FDM coherent optical network using monolithic widely frequency-tunable lasers. The system consists of four channels transmitted around 1.53μm, FSK-modulated at 200Mbit/s and spaced by 2.45 GHz. A 16 × 16 fibre star coupler combines the four optical signals. Demultiplexing is performed by a heterodyne FM receiver at an IF frequency of 850 MHz. The minimum received optical power needed to obtain a BER of 10-9 is -55.5dBm or 109 photons/bit, which is 3.4 dB from the shot noise limit.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 672-673 |
| Number of pages | 2 |
| Journal | Electronics Letters |
| Volume | 25 |
| Issue number | 10 |
| DOIs | |
| State | Published - 1989 |
| Externally published | Yes |
Keywords
- Optical communications
- Optical multiplexing
- Semiconductor lasers
ASJC Scopus subject areas
- Electrical and Electronic Engineering
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