Compression-tuned single-frequency Bragg grating fiber laser

Ball, G.A.; Morey, W. W.

doi:10.1364/ol.19.001979

Cited by 163 publications

(43 citation statements)

References 6 publications

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“…Given the physical constraints of this system, tuning is achieved by stretching the fiber, despite the limited tuning range for stretched as opposed to compressed gratings. (In the 1 .55 im regime stretching leads to a tuning range of 10 nm as opposed to 32 nm for compression [2].) This encoder architecture also requires significant physical separation between gratings to attach the piezoelectric devices, limiting the bit rate.…”

Section: Optical Ffh-cdmamentioning

confidence: 99%

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New architecture and codes for optical frequency-hopping multiple access

Boulianne

Rusch

1998

SPIE Proceedings

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white Gaussian noise. In this case, channel 2 response has been selected. Synchronous and asynchronous systems have been compared in Figure 12, where an interferer user sharing the channel has been taken into account.Optical emitters are implemented by two LEDs using a wavelength of 890 nm pointing to a reflective surface. Optical receiver is an APD C5351-03 Hamamatsu module. This link was evaluated in presence of a fluorescent lamp to verify the system performance in presence of a tone interference. The eye diagram obtained at the double-branch envelope detector is presented in Figure 13. CONCLUSIONSIn this work, an alternative lower cost and easy to implement synchronization scheme has been proposed. This technique also allows the use of multiples coding strategies in a multiuser environment. Furthermore, we have tested the performance of a FFHH link in a quasi-diffuse optical channel. A BER improvement has been demonstrated using the synchronous architecture versus a conventional one.

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Section: Optical Ffh-cdmamentioning

confidence: 99%

“…Define Rm,p as the average cross-correlation for any time shift between the two codes Cmand c, = 21Rm,p(S) (2) If we further average over all code pairs, we arrive at the average cross-correlation…”

Section: Ber Performancementioning

confidence: 99%

New architecture and codes for optical frequency-hopping multiple access

Boulianne

Rusch

1998

SPIE Proceedings

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“…The researches above applied optical fibers in crack monitoring and results showed that optical fibers have potential in crack monitoring. However, all the fibers in the above researches are silica fibers which are brittle (their elongation rates only about 1%) [12], so they are easy to break in real applications and only small cracks can be monitored. Therefore, the brittleness of silica fibers limits the application of above researches.…”

Section: Introductionmentioning

confidence: 99%

Crack monitoring capability of plastic optical fibers for concrete structures

Zhao

Bao

Chen

2015

Optical Fiber Technology

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“…1,[10][11][12][13] This type was chosen here, because fiber lasers can be designed with the excellent mode-hop-free tuning characteristics needed for use with the OFDR system. This approach was also chosen here because the stress-tuning hardware can be compact and lightweight, which is important in view of the high cost of launching payloads into space.…”

Section: Introductionmentioning

confidence: 99%

Novel piezoelectric actuators for tuning an optical fiber Bragg grating

Fox

2002

Opt. Eng

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A method of stretching optical fiber holds interest for measuring strain in smart structures where the physical displacement may be used to tune optical fiber lasers. A small, lightweight, tunable fiber laser is ideal for demodulating strain in optical fiber Bragg gratings (FBGs) attached to smart structures such as the reusable launch vehicle that is being developed by NASA. A method is presented for stretching optical fibers using the thin-layer composite unimorph ferroelectric driver and sensor (THUNDER) piezoelectric actuators invented at NASA Langley Research Center. THUNDER actuators use a piezoelectric layer bonded to a metal backing to enable the actuators to produce displacements larger than the unbonded piezoelectric material. The shift in reflected optical wavelength resulting from stretching the FBG is presented. Means of adapting THUNDER actuators for stretching optical fibers are discussed, including ferrules, ferrule clamp blocks, and plastic hinges made with stereo lithography. © 2002 Society of Photo-Optical Instrumentation Engineers.

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Compression-tuned single-frequency Bragg grating fiber laser

Cited by 163 publications

References 6 publications

New architecture and codes for optical frequency-hopping multiple access

New architecture and codes for optical frequency-hopping multiple access

Crack monitoring capability of plastic optical fibers for concrete structures

Novel piezoelectric actuators for tuning an optical fiber Bragg grating

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