100-Mbps coherent optical link demonstration using frequency-stabilized solid state lasers

Chien-Chung Chen; Dalia Arbel; Moe Zaw Win

doi:10.1117/12.59281

9 June 1992 A 100Mbps coherent optical link demonstration using frequency stabilized solid state lasers

Chien-Chung Chen, Dalia Arbel, Moe Zaw Win

Proceedings Volume 1635, Free-Space Laser Communication Technologies IV; (1992) https://doi.org/10.1117/12.59281
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

The design, implementation, and performance evaluation of a 100Mbps binary phase shift keying (BPSK) coherent optical link using frequency stabilized solid state lasers is described. In this demonstration, the transmitted data is binary phase modulated at 100Mbps using an external resonant cavity phase modulator. At the receiving end, the signal is detected using a balanced heterodyne detector. An auxiliary frequency tracking loop (FTL) is used to help the initial frequency acquisition before handing over to the carrier phase tracking loop. The FTL is implemented using a delay line discriminator, and the detected frequency error is fed back to the local oscillator laser to close the tracking loop. Phase coherent reception is achieved by synchronizing the carrier phase using a Costas tracking loop. The demonstration showed that a high data rate phase coherent optical link can be implemented using frequency stabilized solid state lasers.

Citation Download Citation

Chien-Chung Chen, Dalia Arbel, and Moe Zaw Win "A 100Mbps coherent optical link demonstration using frequency stabilized solid state lasers", Proc. SPIE 1635, Free-Space Laser Communication Technologies IV, (9 June 1992); https://doi.org/10.1117/12.59281

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