Abstract

We present a technique for improved carrier generation by eliminating the instability of a mechanical device in favor of an electro-optical phase modulator in the reference arm of an optical coherence tomography system. A greater than threefold reduction in the phase variance between consecutive A-line scans at a repetition rate of 1 kHz was achieved. Stable and reproducible interference fringe generation permits phase-resolved digital data processing. A correction algorithm was applied to the interferometric signal to compensate for the departure of the source spectrum from an ideal Gaussian shape, resulting in up to 8-dB sidelobe suppression at the expense of a 1-dB increase in the noise floor. In addition, we could eliminate completely the broadening effect of group-delay dispersion on the coherence function by introducing a quadratic phase shift in the Fourier domain of the interferometric signal.

© 2001 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Spectral shaping for non-Gaussian source spectra in optical coherence tomography

Renu Tripathi, Nader Nassif, J. Stuart Nelson, Boris Hyle Park, and Johannes F. de Boer
Opt. Lett. 27(6) 406-408 (2002)

Real-time phase-resolved functional optical coherence tomography by use of optical Hilbert transformation

Yonghua Zhao, Zhongping Chen, Zhihua Ding, Hongwu Ren, and J. Stuart Nelson
Opt. Lett. 27(2) 98-100 (2002)

Simultaneous intensity, birefringence, and flow measurements with high-speed fiber-based optical coherence tomography

Mark C. Pierce, B. Hyle Park, Barry Cense, and Johannes F. de Boer
Opt. Lett. 27(17) 1534-1536 (2002)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription