Power supply interference in smart sensor microcontroller interface by Tijani, Ismaila, Khan, Sheroz

“…Many interfaces (signal conditioning circuits) have been proposed in the recent times in this regards, [1-3]; for instance, it is been employed to convert the measurand into a periodic modulated output signal which can be directly process by the microcontroller without needing an extrinsic AID converter [3]. In [1], relaxation oscillator based conditioning circuit was proposed for proper transmission of sensor output to microcontroller…”
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All-optical Gain-clamped Erbium-doped Fiber Amplifier with Narrowband Amplified Spontaneous Emission Feedback Technique by Haoken, Huoermaiti, Harun, Sulaiman Wadi, Poopalan, Prabakaran, Ahmad, Harith

“…The absence of any oscillating laser in this technique is advantageous since it can avoid relaxation oscillation effect.…”

Investigation of Q-Switching Characteristics in Single- and Double-Spacing Multi-Wavelength Brillouin Erbium Fiber Laser by Tan, S.J., Jusoh, Z., Ali, N.M., Arof, Hamzah, Ahmad, Harith, Harun, Sulaiman Wadi

“…A multi-wavelength Brillouin erbium fiber laser (BEFL) with a Q-switching characteristic is demonstrated using a piece of non-zero dispersion shifted fiber (NZ-DSF) as a Brillouin gain medium (BGM) in conjunction with relaxation oscillation technique. The performance of the multi-wavelength short pulse generation is investigated for two different BEFL configurations for single and double Brillouin spacing outputs. …”

Relative intensity noise reduction by optimizing fiber grating fabry-perot laser parameters by Hisham, H.K., Abas, A.F., Mahdiraji, G.A., Mahdi, M.A., Noor, A.S.M.

“…In addition, by optimization, the relaxation oscillation frequency of RIN spectra is shifted toward around 5.6 GHz.…”

Characterization of phase noise in a single-mode fiber grating Fabry Perot laser by Hisham, H.K., Abas, A.F., Mahdiraji, Ghafour Amouzad, Mahdi, M.A., Noor, A.S.M.

“…In addition, the relaxation oscillation frequency shifts towards more than 6 GHz, which provides larger flat frequency range. …”

Characterization of transient response in fiber grating Fabry–Perot lasers by Adikan, Faisal Rafiq Mahamd, Hisham, H.K., Mahdiraji, G.A., Abas, A.F., Mahdi, M.A.

“…Results show that, by increasing the laser injection current, the relaxation oscillation’s amplitude, frequency, and damping rate are increased, while the laser turn-on time delay is reduced. …”
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Characterization of small-signal intensity modulation of single-mode fiber grating fabry–perot laser source by Hisham, Hisham Kadhum, Abas, Ahmad Fauzi, Mahdiraji, Ghafour Amouzad, Mahdi, Mohd Adzir, Muhammad Noor, Ahmad Shukri

“…We also show that by increasing the laser injection current from 10 to 60 mA, the IM peak amplitude decreased from 6.3 to 0.2 dB and the relaxation oscillation frequency (ROF) is shifted from 1.2 GHz towards higher frequency of 5.48 GHz. …”
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Gain-clamping techniques in two-stage double-pass L-band EDFA by Harun, Sulaiman Wadi, Samsuri, Norhakimah Md, Ahmad, Harith

“…The latter scheme is also expected to be free from the relaxation oscillation problem.…”