Now showing items 1-10 of 14
Cascaded fiber-optic Fabry-Perot interferometers with Vernier effect for highly sensitive measurement of axial strain and magnetic field
We report a highly sensitive fiber-optic sensor based on two cascaded intrinsic fiber Fabry-Perot interferometers (IFFPIs). The cascaded IFFPIs have different free spectral ranges (FSRs) and are formed by a short section ...
Improved location algorithm for multiple intrusions in distributed Sagnac fiber sensing system
An improved algorithm named “twice-FFT” for multi-point intrusion location in distributed Sagnac sensing system is proposed and demonstrated. To find the null-frequencies more accurately and efficiently, a second FFT is ...
Palm-shaped optical spectrum generation for fiber-wireless integrated communication with dual-band millimeter wave capability
We proposed and demonstrated a simple cost-effective palm shaped spectrum generation based on DPMZM in order to simultaneously generating dual-band MMWs and optical carrier, offering an alternative in integration of fiber ...
Photonic generation of microwave signal with capability of arbitrary phase shifting using XPM in HNLF
Photonic generation of microwave signal with capability of full range phase tuning is proposed using XPM in the HNLF. Continuous phase shift with range of 360°is achieved together with compatible WDM operation.
Role of wavelength dependent sensitivity in affecting the crosstalk mitigation of homogeneous multicore fiber : an analytical estimation approach
The mitigation of both crosstalk and its wavelength dependent sensitivity for homogeneous multicore fiber (MCF) is theoretically investigated using an analytical evaluation approach. It is found there exists a performance ...
Nyquist WDM superchannel using offset-16QAM and receiver-side digital spectral shaping
The performance of Nyquist WDM superchannel using advanced modulation formats with coherent detection is degraded due to the existence of both inter-symbol interference (ISI) and inter-channel interference (ICI). Here, we ...
Highly sensitive refractive index sensor based on two cascaded microfiber knots with vernier effect
A highly sensitive refractive index (RI) sensor based on two cascaded microfiber knots with vernier effect is proposed and demonstrated by theoretical arithmetic. Deriving from high proportional evanescent field of microfiber ...
Programmable multi-wavelength filter with Mach–Zehnder interferometer embedded in ethanol filled photonic crystal fiber
We experimentally demonstrated a free spectrum range (FSR) tunable comb filter based on a programmable thermo-controlled Mach–Zehnder interferometer. The device is constructed by sandwiching a length of ethanol-filled ...
Relative phase noise induced impairment in CO-OFDM optical communication system with distributed fiber Raman amplifier
In this letter, we demonstrate that the interplay between Raman pump relative intensity noise and cross-phase modulation leads to a relative phase noise (RPN) that brings non-negligible performance degradation to coherent ...
Relative phase noise estimation and mitigation in Raman amplified coherent optical communication system
The interplay between the stochastic intensity fluctuation of Raman pump laser and cross-phase modulation (XPM) effect in transmission optical fiber leads to additional phase noise, namely, relative phase noise (RPN) of ...