Wavelength-switchable fiber ring laser using chirped Moiré fiber grating combined with Sagnac loop interferometer

نویسندگان

  • Shaohua LU
  • Mei ZHANG
  • Suchun FENG
چکیده

A simple, cost-effective and switchable five-wavelength fiber ring laser based on a chirped moiré fiber grating (CMFG) and a wavelengthtunable Sagnac loop interferometer (FSI) filter is proposed and experimentally demonstrated. To serve as wavelength selective element, the CMFG possesses excellent comb-like filtering characteristics, and its fabrication method is easy and flexible. The usage of the FSI filter helps remove the high-cost optical circulator and improve the output performance of optical signal-to-noise ratio. Streszczenie. Zaproponowano i przedstawiono eksperymentalnie prosty, tani światłowodowy laser żyroskopwy z przełączanymi pięcioma długościami fali. Zastosowano siatkę dyfrakcyjną z efektem mory ze skomprymowanego włókna (CMFG) oraz, w pętli strojenia, filtr z interferometrem z pętlą Signac’a (FSI). Wykorzystana jako element selektywny, ustalający długość fali, siatka CMFG zapewnia doskonałą, grzebieniową charakterystykę filtru, ponadto metoda jej wytwarzania jest łatwa i elastyczna. Wykorzystanie filtru FSI pomaga obniżyć koszt układu i zapewnia na wyjściu dobry stosunek sygnał/szum. Światłowodowy laser żyroskopowy z przełączaną długością fali wykorzystujący siatkę dyfrakcyjną z efektem mory ze skomprymowanego włókna w połączeniu z interferometrem z pętlą Signac’a.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Multi-Stress Monitoring System with Fiber-Optic Mandrels and Fiber Bragg Grating Sensors in a Sagnac Loop

Fiber Bragg grating sensors are placed in a fiber-optic Sagnac loop to combine the grating temperature sensors and the fiber-optic mandrel acoustic emission sensors in single optical circuit. A wavelength-scanning fiber-optic laser is used as a common light source for both sensors. A fiber-optic attenuator is placed at a specific position in the Sagnac loop in order to separate buried Bragg wav...

متن کامل

Ring cavity tunable fiber laser with external transversely chirped Bragg grating

Application of the Transverse Chirped Bragg Grating (TCBG a reflecting volume Bragg grating with continuously variable resonant wavelength across the aperture) for the narrowband tunable ring-cavity fiber laser is presented. The main advantage of the use of TCBG is that its linear translation allows continuous tuning of emission wavelength within 5-10 nm band. Yb doped fiber laser operating in ...

متن کامل

Uniform spacing interrogation of a Fourier domain mode-locked fiber Bragg grating sensor system using a polarization-maintaining fiber Sagnac interferometer.

A novel linearized interrogation method is presented for a Fourier domain mode-locked (FDML) fiber Bragg grating (FBG) sensor system. In a high speed regime over several tens of kHz modulations, a sinusoidal wave is available to scan the center wavelength of an FDML wavelength-swept laser, instead of a conventional triangular wave. However, sinusoidal wave modulation suffers from an exaggerated...

متن کامل

Performance of Sagnac Interferometer with Loops Made of PCF and PANDA Fibers

Optical fiber Sagnac loop as a interferometer (SLI), is a useful component utilized in devices and systems of optical technology [1,2]. As of today, several components based on SLI, have been designed for applications of wavelength division multiplexing (WDM) filters and optical sensors, using conventional and photonic crystal fibers [3-6]. In an SLI, two interfering waves in an optical fiber l...

متن کامل

Polarization Dependence Suppression of Optical Fiber Grating Sensor in a π-Shifted Sagnac Loop Interferometer

In the sensing applications of optical fiber grating, it is necessary to reduce the transmission-type polarization dependence to isolate the sensing parameter. It is experimentally shown that the polarization-dependent spectrum of acousto-optic long-period fiber grating sensors can be suppressed in the transmission port of a π-shifted Sagnac loop interferometer. General expressions for the tran...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2012