DBR active optical filters: transfer function and noise characteristics

Kazovsky, L.G.; Stern, M.S.; Menocal, S.G.; Zah, Chung−En

doi:10.1109/50.59179

Cited by 29 publications

(5 citation statements)

References 8 publications

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“…We assume that K 12 cm-' is feasible. The conclusion that short active and phase sections and weak gratings should be employed, is consistent with the results of Kazovsky et al [12].…”

Section: Improved Devicessupporting

confidence: 89%

“…The last factor in (13) accounts for scattering losses, etc. The first term in (12) corresponds to the amplified signal, the second term to resonantly amplified spontaneous emission, and the terms on the third line correspond to ASE from all other modes within the gain curve. They are approximated as free, traveling wave modes.…”

Section: Noise Properties Measured and Calculated Bermentioning

confidence: 99%

“…In (12), -Amode is the mode area, AV, = c/2nLtot is the longitudinal mode spacing and Q k are independent, random phase factors. The last factor in (13) accounts for scattering losses, etc.…”

Section: Noise Properties Measured and Calculated Bermentioning

confidence: 99%

See 2 more Smart Citations

Active DBR filters for 2.5 Gb/s operation: linewidth, crosstalk, noise, and saturation properties

Sahlen

1992

J. Lightwave Technol.

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The design of four-section distributed Bragg reflector (DBR) laser filters, for application in wavelength multiplexed systems with 2.5-Gb/s bitrate on each wavelength channel, has been analyzed. The results of the analysis indicate that optimized filters will support at least 10 channels and will have a dynamic range exceeding 10 dB. Bit error rate (BER) measurements on three-section DBR filters in a 2.4-Gb/s system experiment support this conclusion.

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“…We assume that K 12 cm-' is feasible. The conclusion that short active and phase sections and weak gratings should be employed, is consistent with the results of Kazovsky et al [12].…”

Section: Improved Devicessupporting

confidence: 89%

Section: Noise Properties Measured and Calculated Bermentioning

confidence: 99%

See 1 more Smart Citation

Active DBR filters for 2.5 Gb/s operation: linewidth, crosstalk, noise, and saturation properties

Sahlen

1992

J. Lightwave Technol.

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“…Tunable DBR Filter/Photodetector Injecting current into the active layer of DBR filter, the central wavelength can be tuned due to the decrease ofthe refractive index [20][21][22][23][24]. To achieve polarization independent tunable DBR filter, a symmetric waveguide core was fabricated using buried heterostructure [25] to get the same effective refractive indices for both the TE and TM modes.…”

Section: 2mentioning

confidence: 99%

<title>Review of high-speed wavelength tunable filters/receivers for broadband switching networks</title>

1996

Fiber Optic Components and Optical Communication

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“…Kazovsky et al [6] have shown that two drawbacks of a conventional DBR device, a multilobe transfer function, and a small gain can be alleviated by reduction of the grating coupling coefficient and the physical length of one or the two sections. This technique can lead to devices having a gain of 35 dB, sidelobe suppression of 32 dB and bandwidth as narrow as 1 GHz.…”

Section: Introduction Wavelength Filter Is a Key Component For Wave-mentioning

confidence: 98%

Analysis of the spontaneous emission of a tunable phase-shift-controlled DFB laser filter

Chawki¹,

Bihan

Ligne³

et al. 1991

J. Lightwave Technol.

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Using a transfer matrix method, the results of analysis Of the spontaneous emission spectrum Of a three section phase controlled DFB laser are presented for implementing a continuously tunable optical filter. The influence of various parameters-net field gain, coupling coefficient, phase shift and reflection coefficients-on the spectrum behavior are studany mode jump. For this reason, a narrow spectrum selection (3.6 GHz) with a wide frequency tunability (33.3 GHz) was achieved while maintaining a constant gain and a 'Onstant gain bandwidth.A Phase controlled laser structure (one active section ied theoretically. The main-to subtransmission peak magnitude ratio can be chosen while varying the frequency, which demonstrates the tunability of the three-section phase controlled DFB laser filter. Analysis shows that a three section DFB laser (a passive phase shift control region between two DFB structures) presents a single-mode spontaneous emission spectrum operating over a wide continuous tuning range of less than 1 nm. The results of our work should aid in the design of multisection DFB laser filter.

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DBR active optical filters: transfer function and noise characteristics

Cited by 29 publications

References 8 publications

Active DBR filters for 2.5 Gb/s operation: linewidth, crosstalk, noise, and saturation properties

Active DBR filters for 2.5 Gb/s operation: linewidth, crosstalk, noise, and saturation properties

<title>Review of high-speed wavelength tunable filters/receivers for broadband switching networks</title>

Analysis of the spontaneous emission of a tunable phase-shift-controlled DFB laser filter

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