https://opg.optica.org/copp Current Optics and Photonics Tue, 25 Aug 2026 00:00:00 EST https://opg.optica.org/rss/images/copp.gif https://opg.optica.org/copp © 2026 Optica Publishing Group 2026-08-24 https://opg.optica.org/abstract.cfm?URI=copp-10-4-345 Joon Ik Jang<br/>Two-dimensional (2D) halide perovskites are layered organic-inorganic semiconductors that naturally form multiple-quantum-well structures. ... [Curr. Opt. Photon. 10, 345-392 (2026)] Tue, 25 Aug 2026 00:00:00 EST Excitonic Phenomena in Two-dimensional Halide Perovskites Joon Ik Jang Two-dimensional (2D) halide perovskites are layered organic-inorganic semiconductors that naturally form multiple-quantum-well structures. ... Optica Publishing Group 2026-08-25 EN https://opg.optica.org/abstract.cfm?uri=copp-10-4-345 Current Optics and Photonics, Vol. 10, Issue 4, pp. 345-392 https://opg.optica.org/abstract.cfm?URI=copp-10-4-393 Hitesh Mehta, Padarthi Venkatramana, Nagaraj Ramrao, Preeta Sharan<br/>This study presents an extension of a previously validated fence-mounted Mach–Zehnder interferometer (MZI)-based fiber-optic ... [Curr. Opt. Photon. 10, 393-401 (2026)] Tue, 25 Aug 2026 00:00:00 EST Machine Learning-assisted Mach–Zehnder Interferometric Fiber-optic Perimeter Intrusion Detection of Underground Deployment Analysis Hitesh Mehta Padarthi Venkatramana Nagaraj Ramrao Preeta Sharan This study presents an extension of a previously validated fence-mounted Mach–Zehnder interferometer (MZI)-based fiber-optic ... Optica Publishing Group 2026-08-25 EN https://opg.optica.org/abstract.cfm?uri=copp-10-4-393 Current Optics and Photonics, Vol. 10, Issue 4, pp. 393-401 https://opg.optica.org/abstract.cfm?URI=copp-10-4-402 Minsoo Park, Joong Wook Lee<br/>Coherent beam combining (CBC) of fiber-laser arrays is commonly controlled by the stochastic parallel gradient descent (SPGD) algorithm, ... [Curr. Opt. Photon. 10, 402-416 (2026)] Tue, 25 Aug 2026 00:00:00 EST Fast Coherent Beam Combining Simulations Using Dither-image Combined Set Transformer Minsoo Park Joong Wook Lee Coherent beam combining (CBC) of fiber-laser arrays is commonly controlled by the stochastic parallel gradient descent (SPGD) algorithm, ... Optica Publishing Group 2026-08-25 EN https://opg.optica.org/abstract.cfm?uri=copp-10-4-402 Current Optics and Photonics, Vol. 10, Issue 4, pp. 402-416 https://opg.optica.org/abstract.cfm?URI=copp-10-4-417 Jongseon Park, Minwan Jung, Soontae Kwon, Taewoo Kim, Taewan Kim, Hyemi Park, Yesol Jang, Yeji Jung<br/>We present a high-power narrow-linewidth Yb-doped fiber (YDF) laser based on a 22/400 μm YDF that achieves an output power exceeding ... [Curr. Opt. Photon. 10, 417-423 (2026)] Tue, 25 Aug 2026 00:00:00 EST 2.7 kW Narrow-linewidth Yb-doped Fiber Laser Using a 22/400 μm Fiber Jongseon Park Minwan Jung Soontae Kwon Taewoo Kim Taewan Kim Hyemi Park Yesol Jang Yeji Jung We present a high-power narrow-linewidth Yb-doped fiber (YDF) laser based on a 22/400 μm YDF that achieves an output power exceeding ... Optica Publishing Group 2026-08-25 EN https://opg.optica.org/abstract.cfm?uri=copp-10-4-417 Current Optics and Photonics, Vol. 10, Issue 4, pp. 417-423 https://opg.optica.org/abstract.cfm?URI=copp-10-4-424 Chul Han Kim<br/>This study evaluated an all-optical automatic gain-controlled (AGC) erbium-doped fiber amplifier (EDFA) specifically engineered to suppress ... [Curr. Opt. Photon. 10, 424-428 (2026)] Tue, 25 Aug 2026 00:00:00 EST Performance Evaluation of All-optical Automatic Gain-controlled Erbium-doped Fiber Amplifier for Suppression of Atmospheric Turbulence-induced Signal Fluctuation Chul Han Kim This study evaluated an all-optical automatic gain-controlled (AGC) erbium-doped fiber amplifier (EDFA) specifically engineered to suppress ... Optica Publishing Group 2026-08-25 EN https://opg.optica.org/abstract.cfm?uri=copp-10-4-424 Current Optics and Photonics, Vol. 10, Issue 4, pp. 424-428 https://opg.optica.org/abstract.cfm?URI=copp-10-4-429 Jae Woo Lee, Ji Yong Joo, Geon Woo Kim, Jun Ho Lee, Cer Hee Choi, Ji In Kim<br/>Laser-induced saturation in imaging sensors, intensified by surface scattering effects, significantly degrades image quality and dynamic ... [Curr. Opt. Photon. 10, 429-437 (2026)] Tue, 25 Aug 2026 00:00:00 EST Laser-induced Saturation Analysis with Scattering Effects Using a PSD-based PSF Model Jae Woo Lee Ji Yong Joo Geon Woo Kim Jun Ho Lee Cer Hee Choi Ji In Kim Laser-induced saturation in imaging sensors, intensified by surface scattering effects, significantly degrades image quality and dynamic ... Optica Publishing Group 2026-08-25 EN https://opg.optica.org/abstract.cfm?uri=copp-10-4-429 Current Optics and Photonics, Vol. 10, Issue 4, pp. 429-437 https://opg.optica.org/abstract.cfm?URI=copp-10-4-438 Jiantao Liang, Zhouping Su<br/>For laser sources with poor beam quality and high optical étendue, the design of freeform lenses for efficient beam shaping remains a ... [Curr. Opt. Photon. 10, 438-446 (2026)] Tue, 25 Aug 2026 00:00:00 EST Design of Freeform Lenses for Laser Beam Shaping with Non-zero Étendue Using a Poisson Feedback Optimization Algorithm Jiantao Liang Zhouping Su For laser sources with poor beam quality and high optical étendue, the design of freeform lenses for efficient beam shaping remains a ... Optica Publishing Group 2026-08-25 EN https://opg.optica.org/abstract.cfm?uri=copp-10-4-438 Current Optics and Photonics, Vol. 10, Issue 4, pp. 438-446 https://opg.optica.org/abstract.cfm?URI=copp-10-4-447 Heewoo Kim, Jinhyuk Bae, Hansol Jeong, Han Seb Moon<br/>Polarization-entangled photon sources are essential resources for quantum key distribution, quantum teleportation, and the construction of ... [Curr. Opt. Photon. 10, 447-452 (2026)] Tue, 25 Aug 2026 00:00:00 EST Polarization-entangled Photon Pairs in a mm-scale Cesium Vapor Cell Heewoo Kim Jinhyuk Bae Hansol Jeong Han Seb Moon Polarization-entangled photon sources are essential resources for quantum key distribution, quantum teleportation, and the construction of ... Optica Publishing Group 2026-08-25 EN https://opg.optica.org/abstract.cfm?uri=copp-10-4-447 Current Optics and Photonics, Vol. 10, Issue 4, pp. 447-452