Comparison of fiber Bragg grating dispersion-compensators made with holographic and e-beam written phase masks

Mihailov, Stephen J.; Bilodeau, François; Hill, O. J.; Johnson, D. C.; Albert, Jacques; Stryckman, D.; Chen, Shu

doi:10.1109/68.759402

Cited by 29 publications

(11 citation statements)

References 9 publications

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“…In practice, it has been confirmed that the amplitude of the GDR is smaller than that of the EB mask [8]. However, it is also known that infinitesimal faults exist in an actual H mask [8], so that the phase error still exists.…”

Section: Various Factors For Group Delay Ripple Generationsmentioning

confidence: 89%

“…Among the above, a study has already been conducted with regard to item (g) [8]. It has been shown that the pitch fluctuation of the mask is a cause of short-term GDR.…”

Section: Various Factors For Group Delay Ripple Generationsmentioning

confidence: 98%

“…On the other hand, the holographic (H) mask written by two-optical-flux interference of laser light does not in principle generate any stitching error, regardless of whether the pattern is uniform or chirped [8]. In practice, it has been confirmed that the amplitude of the GDR is smaller than that of the EB mask [8]. However, it is also known that infinitesimal faults exist in an actual H mask [8], so that the phase error still exists.…”

Section: Various Factors For Group Delay Ripple Generationsmentioning

confidence: 99%

“…In the case of electron beam (EB) writing, the chirped pattern must be written in separated fashion (by a step-chirped mask), and stitching errors occur on the boundary of the patterns, so that the pitch fluctuations are substantial [1]. On the other hand, the holographic (H) mask written by two-optical-flux interference of laser light does not in principle generate any stitching error, regardless of whether the pattern is uniform or chirped [8]. In practice, it has been confirmed that the amplitude of the GDR is smaller than that of the EB mask [8].…”

Section: Various Factors For Group Delay Ripple Generationsmentioning

confidence: 99%

“…Hence, no effective method has been available for reduction of the short-term GDR. For instance, it is extremely difficult to reduce the amplitude of the GDR to less than ±10 ps in a CFBG with a length of about 10 cm [8].…”

Section: Various Factors For Group Delay Ripple Generationsmentioning

confidence: 99%

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Origin of group delay ripple in chirped fiber Bragg gratings and its effective reduction method

Komukai¹,

Inui²,

Nakazawa³

2003

Electron Comm Jpn Pt II

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SUMMARYIn this paper, the characteristics of a fiber Bragg grating fabricated with a chirped phase mask are compared with those of a fiber Bragg grating that is made chirped by addition of distortion to a uniform fiber Bragg grating without phase error. It is found that the dominant cause of generation of group delay ripples lies in the phase error of the chirped phase mask. It is demonstrated that a chirped fiber Bragg grating with smaller group delay ripples than the conventional ones can easily be obtained by adding linear distortions made of insertion of a rod containing a fiber Bragg grating without phase error into an S-shaped groove.

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Section: Various Factors For Group Delay Ripple Generationsmentioning

confidence: 89%

“…Among the above, a study has already been conducted with regard to item (g) [8]. It has been shown that the pitch fluctuation of the mask is a cause of short-term GDR.…”

Section: Various Factors For Group Delay Ripple Generationsmentioning

confidence: 98%