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Mode Locked Laser Phase Noise Reduction Under Optical Feedback for Coherent DWDM Communication

Single section quantum dash (QDash) mode locked lasers (MLL) can provide a flat and broadband optical frequency comb with low energy consumption, operational simplicity and large-scale low-cost production possibilities. MLL longitudinal modes can be employed as single carriers with a regular spectral spacing in a dense wavelength division multiplexing (DWDM) link, making them promising components for next generation DWDM transceivers. However, individual modes of a MLL suffer from relatively high phase noise while high capacity coherent transmission requires carriers with low phase noise. Optical feedback, which is a well-known method to reduce the linewidth of a single mode laser, can be used to stabilize comb lasers. This article reports on the investigation of phase noise properties of comb lines delivered from a single section QDash MLL under optical feedback and shows that each MLL longitudinal mode optical linewidth can be drastically narrowed. It enables coherent transmission with extended link budget over 50 km at Tbit/s line rates.

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Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.38 No.20 October 15 2020

No. Panggil

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Penerbit

: .,

Deskripsi Fisik

p. 5708 - 5715

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

-

Edisi

-

Subjek

PHASE NOISE
OPTICAL FREQUENCY COMB
OPTICAL FEEDBACK
COHERENT TRANSMISSION
SEMICONDUCTOR MODE LOCKED LASERS

Info Detail Spesifik

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Pernyataan Tanggungjawab

Theo Verolet, Guy Aubin, Yi Lin, Colm Browning, Kamel Merghem, Francois Lelarge, Cosimo Calo, Amol Delmade, Karim Mekhazni, Elias Giacoumidis, Alexandre Shen, Liam Barry, Abderrahim Ramdane

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