Decision-Directed Costas Loop Stable Homodyne Detection for 10-Gb/s BPSK Signal Transmission

Koga, Masafumi; Mizutori, Akira

doi:10.1109/lpt.2013.2291014

Cited by 5 publications

(4 citation statements)

References 14 publications

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“…[18][19][20][21][22] In addition to the above techniques of detecting the optical frequency in the optical frequency domain, there is the technique of detecting the optical frequency as the frequency of the electrical beat signal with an optical frequency comb as a reference. 23) Previously, we proposed a fine measurement of the wavelength or the optical frequency with a microwave filter and precise tuning of the optical frequency of the distributed feedback laser (DFB-LD) by controlling its injection current. We experimentally showed that the proposed method could stabilize the optical frequency within ±50 MHz.…”

Section: Introductionmentioning

confidence: 99%

Wide-capture-range, high-precision wavelength stabilization within ±50 MHz for flexible-grid wavelength division multiplexing by photomixing technique

Tsuboi

Kuboki

Kato

2016

Jpn. J. Appl. Phys.

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The lasers for the flexible-grid wavelength division multiplexing (WDM) system are required to have high precision of wavelength stability. Previously, we proposed the wavelength-controlling system of the distributed feedback laser diode (DFB-LD) with the photomixing technique and a microwave filter to precisely measure the optical frequency error from the target value. To enlarge the wavelength-capture range, we improve the system to detect the wavelength error with two different microwave filters in parallel. Experimental results show that the wavelength-capture range is extended up to 4 GHz while the wavelength error is still kept within ±50 MHz.

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Section: Introductionmentioning

confidence: 99%

Wide-capture-range, high-precision wavelength stabilization within ±50 MHz for flexible-grid wavelength division multiplexing by photomixing technique

Tsuboi

Kuboki

Kato

2016

Jpn. J. Appl. Phys.

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“…The Costas loop is used to produce a local oscillation the same with carrier wave for coherent demodulation in carrier synchronization system [4]. It is agreed by practical experience that the Costas loop owns better tolerance of laser phase noise and provides excellent performance at high modulation rate [5]- [7].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Costas Loop Synchronization Effect on BER Performance of Space Uplink Optical Communication System With BPSK Scheme

Song

et al. 2015

IEEE Photonics J.

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The Costas loop is the key technique of synchronous demodulation in the next generation of satellite optical communication systems. To better understand the Costas loop, the relationship between phase deviation of the Costas loop and bit error rate (BER) performance of a binary-phase-shift keying (BPSK) space uplink optical communication system is achieved. Furthermore, the BER performance versus frequency deviation, zenith angle, data rate, and divergence angle are analyzed. Simulation results indicate that BER performances are not sensitive for parameters when the phase deviation of the Costas loop is designed with restriction of =16. These results are helpful for enhancing BER performance and the design of space optical communication systems.

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“…Because carrier is suppressed in most of practical modulation formats used in coherent systems such as binary or quaternary phase shift keying (BPSK or QPSK) and quadrature amplitude modulation (QAM), extraction of carrier from such carrier-less signals is particularly important. In addition to the Costas-loop scheme [4,5] traditionally used in wireless systems, several schemes of optical carrier extraction from carrier-suppressed signals have been recently proposed. In [6], all-optical carrier extraction by a fiber-based phase sensitive oscillator pumped by amplified BPSK signals was demonstrated.…”

Section: Introductionmentioning

confidence: 99%

“…This approach requires neither high-speed electrical signal processing used in the Costas-loop method [4,5] and in [7] nor large optical powers that are needed in the all-optical methods. In this Letter we describe the principles and details of the proposed carrier extraction method.…”

Section: Introductionmentioning

confidence: 99%

Optical carrier extraction from carrier-less phase modulated optical signals

Matsumoto

Nishimura

2015

IEICE Electron. Express

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We propose a novel and simple carrier recovery method from carrier-less phase modulated optical signals. In this method, homodyne detection of the received signal, modulation stripping by an electro-optic phase modulator, and injection locking of a laser diode for carrier generation are performed in a feedback loop. Carrier extraction and error-free homodyne detection of a 10-Gb/s RZ-BPSK signal is demonstrated. The method can also be extended to carrier extraction from QPSK signals.

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Decision-Directed Costas Loop Stable Homodyne Detection for 10-Gb/s BPSK Signal Transmission

Cited by 5 publications

References 14 publications

Wide-capture-range, high-precision wavelength stabilization within ±50 MHz for flexible-grid wavelength division multiplexing by photomixing technique

Wide-capture-range, high-precision wavelength stabilization within ±50 MHz for flexible-grid wavelength division multiplexing by photomixing technique

Investigation of Costas Loop Synchronization Effect on BER Performance of Space Uplink Optical Communication System With BPSK Scheme

Optical carrier extraction from carrier-less phase modulated optical signals

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