Relative intensity noise in optical heterodyning applied to millimeter-wave systems

Abstract

In this paper, the impact of Relative Intensity Noise (RIN) on optical heterodyne millimeter-wave (MMW) generation for Radio-over-Fiber (RoF) applications and systems is presented. The theoretical and experimental study is provided for two different techniques that generate MMW signals. The model of RIN is also presented and is in close agreement with the experiment results. The novelty and originality of this paper is the analysis of RIN in MMW frequency band, where impairments of the MMW generated carrier due to RIN are shown for the first time. The theoretical concepts and the experimental results prove that RIN appearing as side bands of MMW signal is directly generated from initial RIN at low frequency. Two significant impacts are considered: the phase noise on the beat-note carrier and the frequency response of the system, in order to extract real RIN contribution. Index Terms-DistributedFeedback (DFB) Laser, Millimeterwave (MMW), Passively Mode Locked Laser Diode (PMLLD), Phase Noise, Relative Intensity Noise (RIN), Radio-over-Fiber (RoF).

Impact of Relative Intensity Noise on 60-GHz Radio-Over-Fiber Wireless Transmission Systems

“…For more accurate recognition between RIN ini and RIN beat , and for avoiding down-conversion stage, we first present results in [9 kHz-19 GHz] frequency band. For measuring RIN in [9][10][11][12][13][14][15][16][17][18][19] GHz] frequency range, path 1 of Fig. 1 is used.…”

“…Relative intensity noise (RIN) of laser is an indicator of the laser intensity stability and is usually measured from DC to some GHz in [12]. For mm-wave RoF communication systems, RIN has been explored in [13], and the impact of intensity noise on generated mm-wave signals has be observed on error vector magnitude (EVM) [14]- [16]. The photonic mm-wave generation with low phase noise is used by optical carrier suppression (OCS) or optical modulator, but the high insertion loss is experienced and the large RF drive power is required.…”

“…The results presented in [13] are extended to examine the impact of intensity noise on EVM for 60 GHz RoF wireless system using 60 GHz antennas and envelop detector (ED) as incoherent receiver. Data rates of 397 Mbps and 794 Mbps with binary phase shifting keying (BPSK) modulation format are applied as well as a data rate of 1588 Mbps with quadrature phase shifting keying (QPSK) modulation format to comply with communication standards at 60 GHz [18], [19].…”

“…This paper is organized as follows: section II investigates the theory and experimental setup of RIN. In section III, experimental measurements of RIN are analyzed in [9][10][11][12][13][14][15][16][17][18][19] GHz] and in [50-62] GHz frequency ranges. A 60 GHz RoF wireless system is discussed in section IV, and finally the conclusion is presented in section V.…”

Impact of Laser Mode Partition Noise on Optical Heterodyning at Millimeter-Wave Frequencies

“…The influence of phase noise on mm-wave and sub-THz RoF system was investigated [11]- [13]. We also demonstrated the impact of relative intensity noise (RIN) on the generation of mm-wave signals for two different kinds of lasers, and an envelope detector (ED) was proposed to only detect the intensity noise on mm-wave [14]- [16] and W band signals [17]. The use of multi-mode sources can lead to larger power fluctuations in each mode due to laser mode partition noise (LMPN) with relatively constant total optical power from source.…”