Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 33,
  • Issue 1,
  • pp. 34-41
  • (2015)

Homodyne OFDM with Optical Injection Locking for Carrier Recovery

Not Accessible

Your library or personal account may give you access

Abstract

Homodyne detection provides the simplest digital signal processing (DSP) solution to optical coherent detection and minimizes the receiver bandwidth requirements. These features make it promising for high spectrally efficient formats such as optical orthogonal frequency domain multiplexing (OFDM), which has a flat optical spectrum and which is thus inherently sensitive to high-frequency distortions, e.g., due to limited detector bandwidth. The key to homodyne detection is recovery of the carrier from the received signal all optically (as opposed to frequency offset compensation via DSP. Herein, we use optical injection locking (OIL) in conjunction with carrier tone-assisted OFDM to achieve this. In contrast to previous reports, we show that OIL carrier recovery with subsequent homodyne detection can operate without the need for any optical prefiltering. First, we evaluate the performance as a function of the carrier tone guardband bandwidth. Further, we improve the robustness of this technique using a slow-phase lock loop that compensates for drift in the laser's temperature/current control electronics. Using this improved setup, we compare our all-optical-carrier-recovered homodyne and the “traditional” DSP-assisted intradyne detection for the case of OFDM-16QAM signals. Finally, we compare the computing complexity necessary for both approaches and estimate the intradyne performance limitations due to the carrier-local oscillator frequency offset.

© 2014 IEEE

PDF Article
More Like This
Polarization independent optical injection locking for carrier recovery in optical communication systems

Jokhakar Jignesh, Bill Corcoran, Jochen Schröder, and Arthur Lowery
Opt. Express 25(18) 21216-21228 (2017)

Inter-channel nonlinear phase noise compensation using optical injection locking

Jokhakar Jignesh, Arthur Lowery, and Bill Corcoran
Opt. Express 26(5) 5733-5746 (2018)

Microcavity-based narrowband parametric amplifier for carrier recovery in optical coherent self-homodyne detection

Yong Geng, Wenwen Cui, Qing Wen, Boyang Wang, Qiang Zhou, Baojian Wu, and Heng Zhou
Opt. Lett. 44(14) 3490-3493 (2019)

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 Optica member, or as an authorized user of your institution.

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

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved