Generation and transmission of millimeter-wave data-modulated optical signals using an optical injection phase-lock loop

Abstract

Generation and transmission of millimeter-wave data-modulated optical signals is presented using an optical injection phase-lock loop (OIPLL). Millimeter-wave signal generation is demonstrated with wide locking range, 30-GHz low phase noise level, 93 dBc/Hz, and a wide frequency tuning range, 4-60 GHz generation demonstrated using optical injection locking only, verified by using OIPLL in the 26-40 GHz range. The OIPLL is also used to transmit error-free 140-Mb/s amplitude shift keying and 68-Mb/s differential phase-shift keying (DPSK) modulated millimeter-wave signals over up to 65 km of uncompensated standard singlemode fiber. The DPSK system uses reference frequency modulation, eliminating the need for optical amplification.

Performance Improvement and Cost Reduction Techniques for Radio Over Fiber Communications

“…OIL can be combined with the OPLL technique in order to amalgamate the benefits of both techniques. Such a transmitter is referred to as an Optical Injection Phase Locked Loop (OIPLL) [75], [62], which is shown in Fig. 37.…”

“…Braun et al [61] A 64 GHz, 140 -155 Mbps signal having a low phase noise <-100 dBc/Hz and a bit rate of was generated using Optical Sideband Injection Locking (OSIL). 2003 Johansson et al [62] A RF signal having a low phase noise and a data rate of 148 Mbps was generated Optical Injection Locking in the 26-40 GHz range using an Optical Injection Phase Lock Loop (OIPLL) for (OIL) transmission distances upto 65 Km. 2006 Chrostowski et al [63] Presented the various advantages of using OIL in a ROF link, including higher laser power, higher bandwidth, lower noise and lower non-linearity.…”

Microwave photonic frequency doubling in an RoF link DWDM system with four wave mixing

“…The generation of a microwave signals using photonics has attracted much interest and several solutions, e.g., the adoption of phase modulator to induce multiple p phase delays [1], the usage of heterodyne mixing of two stabilized lasers with injection locking [2], the stabilization improvement through fast electronic feedback [3], have been presented before.…”

Tunable Narrow-Linewidth Photonic Microwave Generation Using Semiconductor Laser Dynamics

“…ENERATION of a tunable microwave subcarrier on an optical wave for various photonic and optoelectronic applications has long received great attention [1]- [4]. The simplest approach is direct current modulation of a semiconductor laser with a microwave source.…”

“…Further stabilization can also be done by an optical phase-lock loop [2]. An optical wave carrying a microwave frequency of 4-60 GHz with a minimal linewidth of less than 1 kHz is demonstrated in such a system [4]. All of the above-mentioned methods require an external microwave source as a frequency reference to stabilize the microwave subcarrier frequency.…”