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Measurement of Laser Phase Noise for Ultra-Long Period of 0.8 Seconds with 800-ps Temporal Resolution Using Optical Coherent Detection with FPGA-Implemented Data Acquisition

In this study, we demonstrate laser phase noise measurement with a 0.8-s period and an 800-ps temporal resolution. An optical carrier is received by heterodyne detection, and the detected electrical signals are acquired using field programmable gate array circuits with 1.25-GSample/s analog-to-digital converters and 1-GByte memory. The laser phase noise is visualized using a field spectrogram and a very wide FM noise spectrum from near the DC, which is constructed using our proposed phase-compensating interleaved fast Fourier transformation. We compare the phase noise characteristics of an external cavity laser with those of a distributed feedback semiconductor laser.

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Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.39 No.20 October 15 2021

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 6539-6546

Bahasa

English

ISBN/ISSN

-

Klasifikasi

NONE

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

LASER PHASE NOISE
OPTICAL COHERENT DETECTION
FPGA IMPLEMENTATION

Info Detail Spesifik

DOI: 10.1109/JLT.2021.3101546

Pernyataan Tanggungjawab

Koji Igarashi, Hayato Kiwata, Masahiro Kikuta, Masahiro Shigihara

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