Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Pradeep Kumar Krishnamurthy"'
Publikováno v:
IEEE Photonics Journal, Vol 16, Iss 4, Pp 1-7 (2024)
We propose and experimentally demonstrate a novel dual-pump feedback-based polarization-insensitive wavelength conversion technique using four-wave mixing (FWM) in highly nonlinear fiber (HNLF). By feeding the residual pumps at the output of the HNLF
Externí odkaz:
https://doaj.org/article/3982409c7d4b4084858844977c84d349
Publikováno v:
IEEE Photonics Journal, Vol 15, Iss 5, Pp 1-7 (2023)
In this paper, we experimentally demonstrate a low-power, broadband, and narrow linewidth SBS-FWM OFC with tunable line spacing of 50 to 600 GHz. The SBS-FWM OFC spans a bandwidth of $\approx$100 nm over the C$+$L-band region using $\approx$15 dBm pu
Externí odkaz:
https://doaj.org/article/b5344508a8b24d098926ba1031980c86
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
Abstract We propose 1 state and 2 state multi-step Kalman filters (MKFs) to estimate and compensate CFO, LPN and NLPN in long-haul coherent fiber-optic communication systems. The proposed filters generate state estimates once every m symbols and ther
Externí odkaz:
https://doaj.org/article/603943c283b349219ab3b465ff45a92c
Publikováno v:
IEEE Photonics Journal, Vol 9, Iss 1, Pp 1-10 (2017)
The performance of higher order modulation formats such as 16-quadrature amplitude modulation (QAM) coherent optical communication systems are limited due to several linear and nonlinear impairments such as phase noise, frequency offset, chromatic di
Externí odkaz:
https://doaj.org/article/e86300c4c7944e3aa5ee9fc4e1912329
Publikováno v:
SSRN Electronic Journal.
Publikováno v:
Applied optics. 61(29)
We describe an all-stimulated Brillouin scattering (SBS) fiber-based setup for the generation, amplification, and isolation of frequency components from an optical frequency comb (OFC). The cascaded SBS–OFC is obtained by utilizing pump and Stokes
Publikováno v:
2021 National Conference on Communications (NCC).
We observe optical sideband interference using an optical IQ modulator at the transmitter and a Mach-Zehnder modulator at the receiver. We measure 82% interference visibility in back-to-back configuration and 71% interference visibility over 25 km op
Publikováno v:
2021 National Conference on Communications (NCC).
The Kalman filter is often used for tracking and estimation of effects such as LPN and NLPN in long haul coherent optical communication systems. However, real-time symbol-by-symbol estimation of these parameters is computationally challenging. We use
Autor:
S.S. Gupta, Pradeep Kumar Krishnamurthy, Krupal Patel, Ishan Sharma, Sandeep Gaikwad, Ashitosh Venkatasai Velamuri
Publikováno v:
Journal of Lightwave Technology. 37:3544-3556
In this paper, we describe experimental, simulation, and analytical approaches to study bend losses in single and few-mode optical fibers bent into a circle (in-plane bend) and helix. For the in-plane bend case, we compute loss through simulations an
Publikováno v:
Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXI.
In this work, the capability of a wave plate is exploited to modify the state of polarization, as it provides a controlled phase shift between the two polarization components of propagating light. A half-wave plate is used to stabilize the state of p