## 1 Introduction  
5G's areas of application are diverse and innovative, whether delivering a 3D video, mission critical communications like healthcare, or massive machine-type communications (IoT). At the same time, optical networks have massively expanded in order to manage the constantly growing communication requirements which play a prominent role in the shaping of the evolution of beyond-5G and -6G mobile networks due to the extreme bandwidth, low latency, accurate synchronization, and coverage requirements imposed by 3 GPP [1, 2, 3] carrying traffic to and from 5G small cells. In mobile fronthaul, the cloud radio access network (C-RAN) advocates for the separation of the centralized baseband units (BBUs) of all base stations (BSs) from the remote radio heads (RRHs), placing them in a centralized location or even virtualizing them in the cloud, in an effort to reduce the power consumption and cost of the support equipment. In order to cater the enormous bandwidth, high throughput and adaptable access demands in the next-generation access networks, the hybrid fiber-wireless access network is cropping up as a propitious access network architecture which can deliver both wired and wireless access. Common Public Radio Interface (CPRI) is the protocol primarily employed in the fronthaul links between BBUs and RRHs. CPRI is a digital communication specification of quantized waveforms of baseband signals used in digital radio-over-fiber (D-RoF). However, CPRI demands an extremely high bandwidth, especially for MIMO applications due to the digitization process [4], raising serious concerns regarding the spectral efficiency of the digital optical fronthaul. Furthermore, enhanced CPRI (e-CPRI)--although it requires more complex RRHs--has widely mitigated the situation by fostering higher-layer functional splits, relaxing the inappeasable throughput provision of the transport network [5]. As a consequence, analog radio-over-fiber (A-RoF) provides a solution which exploits the bandwidth utilization efficiency while providing high-capacity and flexible fronthauling. Moreover, the unlicensed 60 GHz mm-wave band has gained notable prominence due to the worldwide license-free spectrum of 7-9 GHz [6]; the converged mm-wave band at 60 GHz with optical fiber networks delivers a high expanse, flexibility, wider coverage, and energy efficiency for high throughput [7] signal transmission in access networks. However, such a converged network is affected by chromatic dispersion in the standard single mode fiber (SSMF). Narrowband transmitters can be used for throughput up to 2.5 Gbit/s in order to solve dispersion-related problems. Dispersion limits the communication distance for high-throughput (>10 Gbit/s) systems such as Orthogonal Frequency Division Multiplexing (OFDM). Hence, it is important to compensate chromatic dispersion in the optical fiber, as it degrades the resulting electrical output. In order to compensate for such an impediment, the authors in [8] proposed an optical single-sideband (SSB) modulation scheme--called \"collateral electro-optic modulation\"--by using parallel electro-optic phase and intensity modulators. In [9], an approach to reduce the dispersion over a SMF channel consisting of mode-locked lasers for mm-waves' creation and transmission was proposed. A dispersion compensation fiber (DCF) to eliminate dispersion in an unlicensed band RoF channel with a 40 Gb/s data rate employing Quadrature Phase Shift Keying (QPSK) modulation in OFDM was proposed in [10], while in [11] the authors proposed a V-band mm-wave frequency of 57-66 GHz using field programming gate arrays (FPGAs) to restore the transmitted signal in a converged OFDM-RoF real-time reception system. A dispersion-shifted fiber (DSF) was used in [12], but this approach is not suitable with 5G standards. Another approach is to use a 1310 nm instead of a 1550 nm wavelength lasing frequency because of its near-zero chromatic dispersion value, but it has higher optical loss.