A Parity-Time-Symmetric Optoelectronic Oscillator Based on Non-Reciprocal Electro-Optic Modulation | PERPUSTAKAAN UNIVERSITAS KATOLIK PARAHYANGAN

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A Parity-Time-Symmetric Optoelectronic Oscillator Based on Non-Reciprocal Electro-Optic Modulation

Fan, Jinying - Nama Orang; Yao, Jianping - Nama Orang; Feng, Xinhuan - Nama Orang; Guan, Bai-Ou - Nama Orang; Zhang, Jiejun - Nama Orang; Li, Lingzhi - Nama Orang;

In this paper, we propose and experimentally demonstrate a parity-time- (PT-) symmetric optoelectronic oscillator (OEO) based on non-reciprocal electro-optic modulation for the generation of a microwave signal with a low phase noise. In the proposed OEO, two mutually coupled optoelectronic loops with one having a gain and the other a loss are implemented based on the copropagating and counterpropagating modulation in a traveling-wave electro-optic Mach-Zehnder modulator (MZM), to achieve PT symmetry. Due to the non-reciprocity of the travelling-wave MZM, the modulation indices are different for the copropagating and counterpropagating light waves in relative to the applied microwave signal, which is then interpreted as different microwave round-trip gains for the mutually coupled optoelectronic loops. Once the gain/loss coefficient is greater than the coupling coefficient, the PT symmetry is broken, and single-mode oscillation is achieved. The proposed OEO is experimentally demonstrated. A 10-GHz microwave signal with a phase noise of −110 dBc/Hz at an offset frequency of 10 kHz and a sidemode suppression ratio of 42 dB is generated. The work provides a new solution to overcome the mode selection problem in a long-cavity OEO. Since a single physical loop is employed, the proposed PT-symmetric OEO has the simplest architecture as compared to any existing PT-symmetric OEOs.

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Barcode		Tipe Koleksi	Nomor Panggil	Lokasi	Status
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Informasi Detail

Judul Seri: JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.39 No.8 April 15 2021
No. Panggil: -
Penerbit: : .,
Deskripsi Fisik: p. 2305 - 2310
Bahasa: English
ISBN/ISSN: -
Klasifikasi: -
Tipe Isi: -
Tipe Media: -
Tipe Pembawa: -
Edisi: -
Subjek: OPTOELECTRONIC OSCILLATOR
TRAVELING-WAVE MODULATION
PHOTONIC SIGNAL GENERATION
PARITY-TIME SYMMETRY
Info Detail Spesifik: DOI: 10.1109/JLT.2020.3047697
Pernyataan Tanggungjawab: Jinying Fan, Lingzhi Li, Jiejun Zhang, Xinhuan Feng, Bai-Ou Guan, Jianping Yao

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