FSK with direct detection in optical multiple-access FDM networks

Kaminow, I. P.

doi:10.1109/49.57803

Cited by 53 publications

(3 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Via df/dV FSR/VFSR (VFSR being the voltage to scan one FSR), we find that 2.5% uncertainty in VFSR results in 2.5% of the FSR uncertainty in frequency, which limits the number of unambiguously addressable channels within one FSR. Depending on the actual shape of the transmissionversus-voltage characteristic of the FFP, its finesse, and the intelligence in the tuning circuit, the hysteresis can result in a lower number of channels than the finesse/3 quoted by [2] as the upper limit for 0. 1 dB crosstalk penalty, especially in FFPs with high finesses; in our case the hysteresis related uncertainty dominates, and limits the number of channels to about 40.…”

Section: Ffp Hysteresismentioning

confidence: 98%

Wavelength tunable receiver for FSK modulated optical signals based on standard direct-detection circuitry

Eijk¹,

Jennen²,

Koonen³

1995

SPIE Proceedings

View full text Add to dashboard Cite

A WDM system has been realized, intended for digital broadband (e.g. video) distribution in an optically splitted subscriber access network. Four standard 565 Mbit/s optical transmitter units have been equipped with wavelength-matched 1557 nm DFB laser diodes. The four transmitters are wavelength-locked to a temperature-stabilized Fiber Fabry-Perot (FFP). The lasers are FSK modulated with a tone spacing of 6.7 GHz; the 565Mbit/s input signals are 7B8B coded to avoid problems with the laser's non-linear FM response. Another tunable FFP precedes a standard direct-detection receiver for both wavelength cannel selection and FSK demodulation. A wavelength control circuit (WCC) ensures locking of the FFP to the correct tone of the selected channel. The WCC continuously maximizes the average FFP output power, by determining the time-derivative of the mean photodiode current. Main advantage of this approach is the absence of a dithering signal, which interferes with the data signal.BER curves have been measured for each of the four channels, and compared with theory, discrepancies are <0.75 dB. A net system power budget of > 28 dB for each channel has been achieved, and no evidence for BER floors has been found down to a BER of 10_li.

show abstract

Section: Ffp Hysteresismentioning

confidence: 98%

Wavelength tunable receiver for FSK modulated optical signals based on standard direct-detection circuitry

Eijk¹,

Jennen²,

Koonen³

1995

SPIE Proceedings

View full text Add to dashboard Cite

show abstract

“…An exception to this rule is presented in [64][65][66] where FSK-modulated FDMA channels are selected by a Fabry-Pérot optical filter and converted to the electrical format using a direct detection receiver.…”

Section: Wavelength Division Multiple Accessmentioning

confidence: 98%

Multiple Access Techniques for Fiber-Optic Networks

Mestdagh¹

1996

Optical Fiber Technology

View full text Add to dashboard Cite

“…Wavelength-Division-Multiplexed (WDM) system [1] plays an important role in optical communications, and filter components are basic elements in WDM system, which select individual wavelength channels from signal stream [2]. Currently, researchers have paid attention to lots of approaches, such as arrayed-waveguide grating [3], grating-assisted coupling structures [4], [5], micro-ring resonators [6], and MZI or cascaded MZIs [7], [8].…”

Section: Introductionmentioning

confidence: 99%

Integrated Optical Filter Using Spiral-Based Cascaded Mach–Zehnder Interferometers

Zeng

Gong

et al. 2019

IEEE Photonics J.

View full text Add to dashboard Cite

We have proposed a new compact integrated optical filter based on cascaded Mach-Zehnder interferometers (MZIs), and designed corresponding coupling structures without S-bend. The wavelength dependence and fabrication tolerance of coupling structures constructed in straight waveguides and bent waveguides were sufficiently analyzed by the finite-difference time-domain (FDTD) method. The results showed that the curved coupler possesses property of broadband with large fabrication tolerance. Specifically, for the presented 3 dB coupler incorporated with the asymmetric curved waveguides, the deviation of transmission remained below 2% at wavelength from 1.5 to 1.6 μm, which is greatly helpful to broadband spectral response of cascaded MZIs. By connecting curved couplers with spiral waveguides, a filter by means of two-stages cascaded MZIs was optimally demonstrated to realize a channel spacing of 10 nm. The spiral-based MZIs filter (SBMF) provides a new reference for MZIs filter limited by footprint and wavelength dependence.

show abstract

FSK with direct detection in optical multiple-access FDM networks

Cited by 53 publications

References 42 publications

Wavelength tunable receiver for FSK modulated optical signals based on standard direct-detection circuitry

Wavelength tunable receiver for FSK modulated optical signals based on standard direct-detection circuitry

Multiple Access Techniques for Fiber-Optic Networks

Integrated Optical Filter Using Spiral-Based Cascaded Mach–Zehnder Interferometers

Contact Info

Product

Resources

About