Multiwavelength fiber ring laser source based on a delayed interferometer

Wavelength spacing tenable capability of optical comb filter using Polarization Maintaining Fiber

“…(10) Equation (10) indicates that spectral spacing depends on the refractive index (n), and length (L) of the fiber material. It also depends on the wave vector (k) i.e.…”

“…Variation of spectral spacing with the variation of wavelength based on equation (10) has been shown in figure 6. In equation (10) spectral spacing ( λ) is directly proportional to the square of the signal wavelength (λ).…”

“…All the fiber filters have the advantages of low insertion loss, low cost, and good compatibility in the fiber communication system. Waveguide-based MZI as a comb-like filter is a better choice [10] because of its inherent advantages of insensitivity to environmental change and high reliability. Recently, polarization independent tunable all-fiber comb filter based on a modified dual-pass MZI has been reported [11].…”

Fabrication and Applications of Microfiber

“…In a thermally unstable environment, these devices may experience thermal drift in the transmission spectrum and fluctuation in the transmission power. However, this problem can be alleviated by the placing the devices in a temperature controlled housing (Dong et al, 2005 ). Sumetsky et al demonstrated a MLR based ultrafast sensor for measurement of gas temperature.…”

Tunable Fibre Lasers Based on Optical Amplifiers and an Opto-VLSI Processor

“…Therefore, the comb filter can be tuned by changing the pump power or adjusting a PC adjacent to the EYD-PMF in the loop. Mach-Zehnder interferometers also offer a tuning mechanism for tunable fiber lasers (H. Dong et al, 2005a). However, they usually suffer from performance instability and difficulty in free spectral range (FSR) control.…”