NDLI: Phase noise performance of double-loop optoelectronic microwave oscillators

Content Provider	IEEE Xplore Digital Library
Author	Modeste Nguimdo, R. Kouomou Chembo, Y. Colet, P. Larger, L.
Copyright Year	2013
Description	Author affiliation: Opt. Dept., Univ. Franche-Comte, Besancon, France (Kouomou Chembo, Y.; Larger, L.) \|\| IFISC (CSIC-UIB), Campus Univ. Illes Balears, Palma de Mallorca, Spain (Modeste Nguimdo, R.; Colet, P.)
Abstract	Summary form only given. Optoelectronic oscillators (OEOs) are useful for applications such as radar, time-frequency metrology and lightwave technology, where microwaves with exceptional purity are needed [1]. The purity of microwave signals is achieved thanks to an optical fiber delay-line inserted into the feedback loop providing a quality factor equal to Q = 2π $f_{m}T,$ where $f_{m}$ is the microwave frequency and T the delay. Microwaves with frequencies as large as 75 GHz, and a phase noise lower than -160 dBc/Hz at 10 kHz has been achieved [2]. As Q increases with T, a long delay should improve the performance. However strong parasite ring-cavity peaks at the integer multiples of the round-trip frequency $Ω_{T}$ = 2π/T limiting the region of low phase noise. Alternatives consisting in adding the output of two loops with different delay time has been proposed to lower the phase noise or to reduce the level of parasite ring-cavity peaks [3]. Single-loop OEOs suffer from another severe limitation: increasing the gain the system becomes unstable leading to a modulation of the microwave amplitude and thus to a degradation of the spectral purity [4].Here, we consider a double-loop optoelectronic delay system in which the output of one of the loops is used to modulate the other (Fig. 1) [5]. Besides reducing the phase noise spurious peaks as linearly coupled dual-loop OEOs, this system allows for stable microwave emission with larger amplitude. A semiconductor laser (SL) injects light into a Mach-Zehnder (MZM1). One part of the optical output is delayed by T2 , detected by photodiode PD2, fed to a narrow-band filter with a central frequency Ω0 and bandwidth ΔΩ2, amplified, and used to modulate MZM2. The other part is delayed by T1, optically fed to MZM2, detected by PD1, filtered by an RF filter of central frequency Ω0 and bandwidth ΔΩ1, amplified and finally used to drive the RF electrode of MZM1 closing the loop. The system can be described by the dimensionless amplifier outputs x(t) and y(t) [5] where xt0 = x(t - t0), F(x,φ) = cos[2x(t) + 2φ], du1/dt = x(t), du2/dt = y(t) and G1 and G2 are the overall loop gains. We derive an amplitude equation and determine the parameter region where stable pure microwaves are generated. By including suitable stochastic terms we determine the phase noise performance. As shown in Fig. 1 by appropriately setting the parameters of the second loop, a significant improvement of performance can be achieved comparatively to the single-loop configuration, as the detrimental effect of the multiplicative phase noise can be reduced up to about 18 dB close to the carrier, while delay-induced spurious peaks can be strongly damped.
Sponsorship	Eur. Phys. Soc.
Starting Page	1
Ending Page	1
File Size	267403
Page Count	1
File Format	PDF
e-ISBN	9781479905942
DOI	10.1109/CLEOE-IQEC.2013.6801235
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-05-12
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Phase noise Microwave technology Frequency modulation Optical feedback Microwave oscillators Delays
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Opto-electronic Feedback Loop for Phase Noise Suppression at FET Based RF Oscillators

Dual-loop optical feedback for microwave phase noise reduction in nonlinear dynamics of semiconductor lasers

Photonic microwave harmonic generator driven by an optoelectronic ring oscillator

Optoelectronic microwave oscillators using diode lasers

Improving the frequency stability and phase noise of opto-electronic oscillators by harmonic feedback

Performance evaluation of optoelectronic oscillators

Optoelectronic oscillators based on polarization modulation

Phase Noise Performance of Optoelectronic Oscillators Based on Whispering-Gallery Mode Resonators

Dual-loop opto-electronic oscillator

Phase noise performance of double-loop optoelectronic microwave oscillators

Similar Documents

Opto-electronic Feedback Loop for Phase Noise Suppression at FET Based RF Oscillators

Dual-loop optical feedback for microwave phase noise reduction in nonlinear dynamics of semiconductor lasers

Photonic microwave harmonic generator driven by an optoelectronic ring oscillator

Optoelectronic microwave oscillators using diode lasers

Improving the frequency stability and phase noise of opto-electronic oscillators by harmonic feedback

Performance evaluation of optoelectronic oscillators

Optoelectronic oscillators based on polarization modulation

Phase Noise Performance of Optoelectronic Oscillators Based on Whispering-Gallery Mode Resonators

Dual-loop opto-electronic oscillator

Phase noise performance of double-loop optoelectronic microwave oscillators