Effects of Polarization Modulation Induced by Electro-Optic Modulators in Fiber-Based Setups

Manamanni, Karim; Steshchenko, Tatiana; Ramdane, A.; Roncin, Vincent

doi:10.1109/lpt.2022.3142944

Cited by 1 publication

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because of its birefringence, the cavity analyzes this polarization along its main axes by separating the polarizations according to the two families of modes, which leads to the distortion of the signal detected at the cavity output. This effect has been demonstrated experimentally in [9] and analyzed theoretically in [17]. On the other hand, RAM at the modulation frequency appears after any component with polarization-dependent losses (PDL) placed downstream of the modulator.…”

Section: -Resultsmentioning

confidence: 89%

“…According to these results, we limit input power to -5 dBm considering that our experiment is not limited by the beam noise. Another limitation is due to the polarization modulation generated in EOMs, which has two consequences: the error signal's distortion, detected at the output of the cavity and the appearance of a residual amplitude modulation (RAM) [17]. As in practice the polarization of the input beam of the modulator is never strictly linear and misaligned with respect to the modulator axes, the output beam exhibits a modulation of its polarization which results in a periodic evolution of the polarization state at the modulation frequency.…”

Section: -Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Limitations of frequency stability transfer in the near infrared using a fiber-based ring cavity

Steshchenko¹,

Manamanni²,

Mouhamad³

et al. 2022

Opt. Lett.

Self Cite

View full text Add to dashboard Cite

We describe a fiber ring cavity for transferring frequency stability from a metrological optical reference at 1542 nm to tunable lasers covering 100 nm around 1.55 µm and show a stability transfer to the 10−15 level in relative value. The optical length of the ring is controlled by two actuators: a cylindrical piezoelectric tube (PZT) actuator on which a portion of the fiber is coiled and glued for fast corrections (vibrations) acting on the length of the fiber, and a Peltier module for slow corrections acting on its temperature. We characterize the stability transfer and analyze the limitations imposed by two critical effects in the setup: Brillouin backscattering and the polarization modulation generated by the electro-optic modulators (EOMs) used in the error signal detection scheme. We show that it is possible to reduce the impact of these limitations to a level below the detection threshold imposed by the servo noise. We also show that in the long term, the limitation to the stability transfer is a thermal sensitivity of –550 Hz/K/nm which could be reduced by active control of the ambient temperature.

show abstract

Section: -Resultsmentioning

confidence: 89%

Section: -Resultsmentioning

confidence: 99%