Delivering the same optical frequency at two places: accurate cancellation of phase noise introduced by an optical fiber or other time-varying path.
نویسندگان
چکیده
Although a single-mode optical fiber is a convenient and efficient interface/connecting medium, it introduces phase-noise modulation, which corrupts high-precision frequency-based applications by broadening the spectrum toward the kilohertz domain. We describe a simple double-pass fiber noise measurement and control system, which is demonstrated to provide millihertz accuracy of noise cancellation.
منابع مشابه
Coherent subcarrier fiber-optic communication systems with phase-noise cancellation
A phase-noise-cancelled coherent subcarrier fiberoptic communication system that uses integrated-optic MachZehnder waveguide modulators for frequency-pair encoding is introduced. Optical double-sideband suppressed-carrier signals with the same random phase noise and information encoded in the frequency separation of the two sidebands are generated by properly biasing the modulator. Phase noise ...
متن کاملNd:YAG lasers at 1064 nm with 1-Hz linewidth
Two Nd:YAG lasers are tightly frequencystabilized to separately located, vertically mounted ultrastable cavities, which are connected by single-mode optical fibers employing fiber phase noise cancellation. The optical heterodyne beat between two independent lasers shows that the linewidth of each laser reaches 1 Hz and the frequency drift is less than 0.3 Hz/s. PACS 42.55.Px · 42.60.Da · 42.62....
متن کاملRemote transfer of ultrastable frequency references via fiber networks.
Three distinct techniques exist for distributing an ultrastable frequency reference over optical fibers. For the distribution of a microwave frequency reference, an amplitude-modulated continuous wave (cw) laser can be used. Over kilometer-scale lengths this approach provides an instability at 1 s of approximately 3 x 10(-14) without stabilization of the fiber-induced noise and approximately 1 ...
متن کاملSimulation and Analysis the Performance of 3970 Km DWDM Transmission Link Employing Optimized Semiconductor Optical Amplifiers
In this paper first we try to analysis the behavior ofthe SOAs in the optical networks and then have proposed anumerical simple model to simulate the behavior of thesemiconductor optical amplifiers. After that by employing thismodel as inline amplifier for a DWDM optical system, we havesimulated the transmission of 10 channels with bit rate 10 Gb/sup to distance 3970 km with RZ-DPSK modulation ...
متن کاملSub-THz Carrier Frequency Generation Stabilized by Mach-Zehnder Interferometric Phase Detection Scheme
We propose a Mach-Zehnder interferometric phase detection for low phase noise subterahertz (THz) carrier frequency generation. In this scheme, phase fluctuation between two optical signals can be detected as the interference between their optical sidebands. Experimental result shows that, by controlling the interference to be constant, the phase noise is successfully reduced, which indicates ef...
متن کاملذخیره 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 ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Optics letters
دوره 19 21 شماره
صفحات -
تاریخ انتشار 1994